Updated on 2025/09/30

写真a

 
HIROKAWA,Kumi
 
Organization
Faculty of Societal Safety Sciences Professor
Title
Professor
External link

Papers

  • Associations between parents’ broader autism phenotype and children’s developmental difficulty scores at 6 and 12 months: A prospective study

    Kumi Hirokawa, Sachiko Baba, Satoyo Ikehara, Meishan Cui, Naomi Kitano, Hirofumi Nakayama, Keiichi Ozono, Hiroyasu Iso

    International Journal of Behavioral Development   2025.7

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    DOI: 10.1177/01650254251351942

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  • Mediating effects of menstruation/menopause on the association between the COVID-19 pandemic related post-traumatic stress disorder symptoms and loneliness in Japanese female workers: A cross-sectional study

    Kumi Hirokawa, Tetsuro Noda, Kyoko Tokunaga

    European Journal of Obstetrics & Gynecology and Reproductive Biology   2025.4

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    DOI: 10.1016/j.ejogrb.2025.01.048

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  • Hofstede’s Cultural Values and Birth Rate and Longevity: A National-Level Analysis

    Hirokawa, K., Kasuga, A., Gondo, Y., Honjo, K., Taras, V.

    Journal of Adult Development   31 ( 2 )   2024.6

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    DOI: 10.1007/s10804-023-09457-4

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  • Association between work environment changes due to the COVID-19 pandemic and post-traumatic stress disorder in Japanese workers during the emergency declaration

    Noda, T., Hirokawa, K., Tokunaga, K.

    Psychiatry and Clinical Neurosciences Reports   3 ( 2 )   2024.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/pcn5.206

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  • Associations between dietary intake and depressive symptoms modified by a feminine personality trait in Japanese female students Reviewed

    Kumi Hirokawa, Yoko Takahata, Sayo Uesugi

    Preventive Medicine Research   2 ( 2 )   41 - 44   2024.3

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    DOI: 10.60219/pmr.2.2_41

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  • Associations between salivary testosterone levels and cognitive function among 70‐year‐old Japanese elderly: A cross‐sectional analysis of the <scp>SONIC</scp> study

    Kumi Hirokawa, Ayaka Kasuga, Kiyoaki Matsumoto, Yasuko Omori, Yukie Masui, Takeshi Nakagawa, Madoka Ogawa, Yoshiko Ishioka, Hiroki Inagaki, Kazunori Ikebe, Yasumichi Arai, Tatsuro Ishizaki, Kei Kamide, Yasuyuki Gondo

    Geriatrics &amp; Gerontology International   22 ( 12 )   1040 - 1046   2022.12

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    Aim

    This cross‐sectional study aimed to investigate the associations between salivary testosterone concentrations and cognitive function in 70‐year‐old Japanese elderly people without dementia and stroke.

    Methods

    Participants were 197 Japanese community‐dwelling people aged 69–71 years. Their salivary samples were collected, and their cognitive function was assessed using the Japanese version of the Montreal Cognitive Assessment (MoCA‐J). Participants were also administered a 10‐item recall and a 24‐item recognition test. The data for 179 (106 men and 73 women) individuals were analyzed, excluding individuals with a past history of stroke and dementia. Multivariate logistic regression analyses were performed after adjusting for lifestyle factors and analyzing data separately for men and women.

    Results

    MoCA‐J scores showed that men with low testosterone concentrations had a significantly greater risk of low cognitive performance than those with high testosterone concentrations (adjusted odds ratio: 4.72, 95% confidence interval: 1.06–21.00), while no significant association was found in women. The 10‐item recall test scores showed that higher testosterone concentrations were significantly associated with greater recall in the second trial in women (standardized beta = 0.24, P = 0.040), whereas no significant association was found in men. Salivary testosterone concentrations were positively associated with better cognitive performance in older men and women.

    Conclusions

    The associations between salivary testosterone concentrations and cognitive function were shown by different tasks for men and women. Geriatr Gerontol Int 2022; 22: 1040–1046.

    DOI: 10.1111/ggi.14504

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    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ggi.14504

  • Associations of testosterone and cortisol concentrations with sleep quality in Japanese male workers

    Hirokawa, K., Fujii, Y., Taniguchi, T., Tsujishita, M.

    Comprehensive Psychoneuroendocrinology   12   2022.11

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    DOI: 10.1016/j.cpnec.2022.100158

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  • Associations Between Occupational Status, Support at Work, and Salivary Cortisol Levels

    Kumi Hirokawa, Tetsuya Ohira, Masanori Nagao, Mako Nagayoshi, Mitsugu Kajiura, Hironori Imano, Akihiko Kitamura, Masahiko Kiyama, Takeo Okada, Hiroyasu Iso

    International Journal of Behavioral Medicine   2021.8

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s12529-021-10020-2

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    Other Link: https://link.springer.com/article/10.1007/s12529-021-10020-2/fulltext.html

  • Associations Between Occupational Status, Support at Work, and Salivary Cortisol Levels. International journal

    Kumi Hirokawa, Tetsuya Ohira, Masanori Nagao, Mako Nagayoshi, Mitsugu Kajiura, Hironori Imano, Akihiko Kitamura, Masahiko Kiyama, Takeo Okada, Hiroyasu Iso

    International journal of behavioral medicine   2021.8

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    OBJECTIVE: The present study investigated associations between occupation, job stress, and salivary cortisol levels after psychological tasks. METHODS: We examined 766 (273 men and 493 women) healthy employed Japanese participants aged 21 to 68 years (mean age = 46.4 years, standard deviation = 8.5) with three types of occupation: manager, teacher, and general worker. The Brief Job Stress Questionnaire was used to evaluate participants' job stress levels, including job demand, job control, support from supervisors, and support from coworkers. Salivary cortisol levels were measured at pre-session, post-stressful tasks, and post-relaxation. All samples were assayed using an enzyme-linked immunosorbent assay test. Natural log transformation was applied before statistical analyses. A multiple regression analysis and a repeated measures analysis of covariance were conducted to test associations between occupation and salivary cortisol levels, adjusting for confounding factors. Statistical analyses were conducted separately for men and women. RESULTS: Among both men and women, general workers had higher cortisol levels than managers throughout the experimental session (men 0.6 μg/dL and 0.4 μg/dL, respectively; women 0.5 μg/dL and 0.4 μg/dL, respectively). Job control was positively associated with cortisol levels measured in all sessions, after adjusting for confounding factors (standardized beta 0.15, 0.21, and 0.18 for pre-session, post-stressful-tasks, and post-relaxation, respectively, all p < 0.05). Men with low support from coworkers had higher cortisol levels than those with high support through the sessions (0.6 μg/dL and 0.4 μg/dL, respectively). CONCLUSION: Socioeconomic disparity according to occupational status was related to cortisol levels in Japanese workers. Support from coworkers may be effective for reducing cortisol secretion in men.

    DOI: 10.1007/s12529-021-10020-2

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  • [Mental health measures: Filling gaps in support systems of regional and occupational health fields].

    Kumi Hirokawa, Jiro Moriguchi, Taiga Seo, Yoko Nomura, Kyoko Nomura, Tetsuya Ohira, Hiroto Ito, Akiomi Inoue, Akizumi Tsutsumi

    [Nihon koshu eisei zasshi] Japanese journal of public health   68 ( 5 )   311 - 319   2021.6

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.11236/jph.20-135

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  • メンタルヘルス対策 職域と地域の連携のギャップを埋めるために

    廣川 空美, 森口 次郎, 脊尾 大雅, 野村 洋子, 野村 恭子, 大平 哲也, 伊藤 弘人, 井上 彰臣, 堤 明純

    日本公衆衛生雑誌   68 ( 5 )   311 - 319   2021.5

  • メンタルヘルス対策 職域と地域の連携のギャップを埋めるために

    廣川 空美, 森口 次郎, 脊尾 大雅, 野村 洋子, 野村 恭子, 大平 哲也, 伊藤 弘人, 井上 彰臣, 堤 明純

    日本公衆衛生雑誌   68 ( 5 )   311 - 319   2021.5

  • Andropause symptoms and sickness absence in Japanese male workers: a prospective study. International journal

    Kumi Hirokawa, Yasuhito Fujii, Toshiyo Taniguchi, Jiro Takaki, Akizumi Tsutsumi

    The aging male : the official journal of the International Society for the Study of the Aging Male   23 ( 5 )   1545 - 1552   2020.12

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    OBJECTIVE: The purpose of the study was to investigate the association between andropause symptoms and sickness absence in Japanese male workers over 2 years. METHODS: A baseline survey asking about andropause symptoms, along with blood sampling for testosterone level, was conducted in June 2009. A total of 418 men (mean age = 52.4 years, SD = 8.6) participated and were followed through 2011. Hazard ratios (HRs) and 95% confidence intervals (CIs) for sickness absence were calculated using Cox proportional hazard models. RESULTS: During the follow-up period, 31 of 35 participants who took sickness absences had physical illnesses. A higher andropause symptom score was associated with an increased risk of sickness absence. Testosterone deficiency (<350 ng/dL) was not associated with sickness absence. Among the subscales of andropause symptoms, the somatic symptom score was positively associated with sickness absence, whereas testosterone deficiency combined with high sexual symptoms was not associated with sickness absence. Results were similar when limited to sickness absence because of physical illness. No significant interaction between andropause symptoms and testosterone deficiency was found. CONCLUSIONS: Non-specific andropause symptoms unrelated to testosterone deficiency were positively associated with sickness absence.

    DOI: 10.1080/13685538.2020.1862078

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  • 妊婦の自閉症傾向特性の特徴について 子どもの健康と環境に関する全国調査

    廣川 空美, 木村 尚史, 池原 賢代, 本庄 かおり, 植田 紀美子, 佐藤 拓代, 磯 博康

    日本公衆衛生学会総会抄録集   79回   360 - 360   2020.10

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    Language:Japanese   Publisher:日本公衆衛生学会  

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  • Job stress factors measured by Brief Job Stress Questionnaire and sickness absence among Japanese workers: A longitudinal study.

    Kumi Hirokawa, Tetsuya Ohira, Mitsugu Kajiura, Hironori Imano, Akihiko Kitamura, Masahiko Kiyama, Takeo Okada, Hiroyasu Iso

    Fukushima journal of medical science   66 ( 2 )   88 - 96   2020.8

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    This study aimed to investigate associations between Brief Job Stress Questionnaire (BJSQ)-measured job stress factors and sickness absence in Japanese workers. Among 551 healthy, employed Japanese men and women (age range: 21-73 years) who underwent mental health examinations at the Osaka Medical Center for Health Science and Promotion between 2006 and 2009, 197 (67 men, 130 women) consented to participate in this study. Their sickness absences until the end of March 2010 were then followed-up via postal mail survey, with 112 participants effectively responding to the question on sickness absence (56.9%). The hazard ratio (HR) and 95% confidence interval (CI) were calculated using the Cox proportional hazards model, adjusting for age, sex, and lifestyle factors. Among the 112 respondents, 12 took sickness absence after their study entry, as found during the mean 2.3 years of follow-up (258.8 person-years). Among all sickness absences, those of eight participants were because of mental illness. Physical demands were positively associated with increased risks of all sickness absence (adjusted HR: 2.78, 95% CI: 1.01-7.64). Physical demands were predictive for all sickness absence, and should be alleviated at workplaces to prevent such absence.

    DOI: 10.5387/fms.2019-15

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  • Cardiovascular reactivity to acute stress associated with sickness absence among Japanese men and women: A prospective study. Reviewed International journal

    Kumi Hirokawa, Tetsuya Ohira, Mitsugu Kajiura, Hironori Imano, Akihiko Kitamura, Masahiko Kiyama, Takeo Okada, Hiroyasu Iso

    Brain and behavior   e01541   2020.2

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    OBJECTIVE: We aimed to investigate associations between cardiovascular reactivity to acute stress and sickness absence among Japanese male and female workers, in a prospective study. METHODS: Among healthy employed Japanese workers who underwent mental health checks between 2006 and 2009, data of 111 participants were analyzed. Changes in blood pressure, pulse rate, peripheral blood flow (PBF), and heart rate variability (HRV) (high frequency [HF] and low frequency [LF]) were calculated using differences between the two tasks, mirror drawing stress [MDS] and a maze task, and the postperiod value. Sickness absence through March 2010 was followed up by mail survey (average follow-up 2.3 years). Logistic regression analysis was used, adjusting for lifestyle factors. RESULTS: Among 12 participants who took sickness absences, eight were owing to mental problems. Changes in the LF during the MDS and maze tasks and LF-to-HF ratio during the MDS task were positively associated with all sickness absences (odds ratio [OR], 95% confidence interval [CI]: 2.09, 1.03-4.22; 2.04, 1.09-3.82; and 3.10, 1.46-6.58, respectively). Changes in PBF during the MDS task were also associated with increased risk of sickness absence (OR, 95% CI: 2.53, 1.10-5.81). CONCLUSION: Cardiovascular reactivity to acute stress should be considered at workers' health checks.

    DOI: 10.1002/brb3.1541

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  • Associations Between Broader Autism Phenotype and Dietary Intake: A Cross-Sectional Study (Japan Environment & Children's Study). Reviewed International journal

    Kumi Hirokawa, Takashi Kimura, Satoyo Ikehara, Kaori Honjo, Kimiko Ueda, Takuyo Sato, Hiroyasu Iso

    Journal of autism and developmental disorders   50 ( 8 )   2698 - 2709   2020.1

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    The purpose of the present study was to investigate associations of dietary intake including vitamin D, folate, and n-3 and n-6 polyunsaturated fatty acids (PUFA) in pregnant women with broad autism phenotype (BAP). The Japan Environment and Children's Study is a government-funded birth cohort study. All complete data of 92,011 were analyzed. The Japanese version of the Autism Spectrum Quotient was used to assess mothers' BAP level, and a food frequency questionnaire was used to estimate their dietary intake. Mothers with BAP consumed less vegetables, fruits, and fish and shellfish, and they consumed lower folate, vitamin C, vitamin D, and n-3 PUFA than their counterparts. Dietary intervention should be considered for pregnant women with high BAP scores.

    DOI: 10.1007/s10803-020-04380-z

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  • Associations between broader autism phenotype (BAP) and maternal attachment are moderated by maternal postpartum depression when infants are one month old: A prospective study of the Japan environment & children's study. Reviewed International journal

    Kumi Hirokawa, Takashi Kimura, Satoyo Ikehara, Kaori Honjo, Takuyo Sato, Kimiko Ueda, Hiroyasu Iso

    Journal of affective disorders   243   485 - 493   2019.1

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    BACKGROUND: Broader autism phenotype (BAP) refers to the expression of behavioral and cognitive dispositions similar to autism spectrum disorder. The present study investigated whether mothers' BAP was prospectively associated with maternal attachment, and if postpartum depression modified this association. METHODS: The Japan Environment and Children's Study (JECS) is a national and government-funded birth cohort study that began in January 2011. Among the 103,099 mothers enrolled, 87,369 mothers without a history of depression were included in the analysis. Self-administered questionnaires were used. These included: the Japanese version of the Autism Spectrum Quotient, the Mother to Infant Bonding Scale, and the Edinburgh Postnatal Depression Scale. Logistic regression analyses were performed. RESULTS: The BAP during the second or third trimester of pregnancy was linearly associated with an increased risk of postpartum depression and insecure maternal attachment when infants were one month old (p for trend < 0.001), after adjusting for confounding variables. When stratified by postpartum depression, among the BAP subscales, deficiencies in social skills and communication were associated with an increased risk of insecure maternal attachment in mothers without postpartum depression. The relationships between the BAP subscales and maternal attachment were attenuated among mothers with postpartum depression. LIMITATIONS: Only five items of the Mother to Infant Bonding Scale were used in the present study, and thus the results should be interpreted with caution. CONCLUSIONS: Mothers' BAP was predictive of insecure maternal attachment toward their infant. Postpartum depression partially moderated the associations between mothers' BAP and insecure maternal attachment.

    DOI: 10.1016/j.jad.2018.09.060

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  • Relationship between the Second to Fourth Finger Length Ratio and Calcaneus Quantitative Ultrasound. Reviewed International journal

    Yoko Takahata, Kumi Hirokawa

    Scientific reports   8 ( 1 )   14603 - 14603   2018.10

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    This study aimed to characterize the relationship between the ratio of the length of the second and fourth fingers (2D:4D value) and the speed of sound of the calcaneus by quantitative ultrasound (QUS-SOS) in undergraduate female students. We recruited 138 young women with a mean age of 19.6 ± 1.4 years. The participants' calcaneus QUS-SOS was measured using an ultrasound bone densitometer. We also measured the participants' weight, height, and grip strength. A self-reported questionnaire was used to obtain information on participants' secondary sexual characteristics, and exercise habits. The present study showed that the 2D:4D value of both hands was significantly correlated with the calcaneus QUS-SOS. The 2D:4D value of the left hand was also positively associated with the calcaneus QUS-SOS results in several respects. These findings suggest that the 2D:4D value may be useful for the screening of risk for a low bone quality in undergraduate female students.

    DOI: 10.1038/s41598-018-33056-z

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  • Association Between Cortisol to DHEA-s Ratio and Sickness Absence in Japanese Male Workers Reviewed

    Kumi Hirokawa, Yasuhito Fujii, Toshiyo Taniguchi, Jiro Takaki, Akizumi Tsutsumi

    International Journal of Behavioral Medicine   25 ( 3 )   362 - 367   2018.6

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Nature  

    DOI: 10.1007/s12529-017-9700-1

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  • Occupational status and job stress in relation to cardiovascular stress reactivity in Japanese workers. Reviewed International journal

    Kumi Hirokawa, Tetsuya Ohira, Mako Nagayoshi, Mitsugu Kajiura, Hironori Imano, Akihiko Kitamura, Masahiko Kiyama, Takeo Okada, Hiroyasu Iso

    Preventive medicine reports   4   61 - 7   2016.12

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    This study aimed to investigate the effects of occupational status and job stress factors on cardiovascular stress reactivity in Japanese workers. In this baseline assessment between 2001 and 2009 in Osaka, Japan, we examined 928 healthy Japanese employees (330 men, 598 women) from two occupational statuses: managers/professionals and general workers. A brief job stress questionnaire was used to evaluate job stress levels. Systolic and diastolic blood pressure (SBP, DBP), heart rate, heart rate variability (high-frequency [HF], low-frequency [LF], LF/HF], and peripheral blood flow were measured at rest and during two stressful tasks. Changes in stress reactivity were calculated as the difference between the measured variables during the tasks and the rest period. Men showed inverse associations between quantitative job overload and DBP, heart rate, and LF/HF, between physical demands and blood pressure (SBP, DBP), and between a poor physical environment and HF. Men also had positive associations between qualitative job overload and heart rate, and between physical demands and peripheral blood flow (all p < 0.05). Women showed inverse associations between qualitative job overload and SBP, and showed positive associations between qualitative job overload and peripheral blood flow, and between a poor physical environment and SBP (all p < 0.05). When stratified by occupational status, significant associations between job stress and changes in stress reactivity were observed in male managers/professionals and female general workers (p < 0.05). Job stress levels are associated with changes in cardiovascular stress reactivity in men and women. Occupational status may modify these associations.

    DOI: 10.1016/j.pmedr.2016.05.010

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  • Modification Effects of Changes in Job Demands on Associations Between Changes in Testosterone Levels and Andropause Symptoms: 2-Year Follow-up Study in Male Middle-Aged Japanese Workers Reviewed

    Kumi Hirokawa, Toshiyo Taniguchi, Yasuhito Fujii, Jiro Takaki, Akizumi Tsutsumi

    INTERNATIONAL JOURNAL OF BEHAVIORAL MEDICINE   23 ( 4 )   464 - 472   2016.8

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    DOI: 10.1007/s12529-015-9530-y

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  • Dehydroepiandrosterone-sulfate is associated with cardiovascular reactivity to stress in women Reviewed

    Kumi Hirokawa, Tetsuya Ohira, Mako Nagayoshi, Mitsugu Kajiura, Hironori Imano, Akihiko Kitamura, Masahiko Kiyama, Takeo Okada, Hiroyasu Iso

    PSYCHONEUROENDOCRINOLOGY   69   116 - 122   2016.7

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    DOI: 10.1016/j.psyneuen.2016.04.005

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  • Moderating effects of salivary testosterone levels on associations between job demand and psychological stress response in Japanese medical workers Reviewed

    Kumi Hirokawa, Machiko Miwa, Toshiyo Taniguchi, Masao Tsuchiya, Norito Kawakami

    Industrial Health   54 ( 3 )   194 - 203   2016.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:National Institute of Industrial Health  

    DOI: 10.2486/indhealth.2015-0113

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  • Associations of workplace bullying and harassment with stress reactions: a two-year follow-up study Reviewed

    Toshiyo Taniguchi, Jiro Takaki, Kumi Hirokawa, Yasuhito Fujii, Kaori Harano

    INDUSTRIAL HEALTH   54 ( 2 )   131 - 138   2016.3

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    DOI: 10.2486/indhealth.2014-0206

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  • 大阪府下の精神科専門医療機関を対象とした職場のメンタルヘルスに関するサービス内容の調査 Reviewed

    Kumi Hirokawa, Tamiyo Owaki, Tetsuya Ohira, Toshiaki Hakui

    Roudou Anzen Eisei Kenkyuu   9 ( 1 )   9 - 15   2016

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    Language:Japanese   Publisher:National Institute of Industrial Health  

    The purpose of the present study was to clarify the current status of psychiatric services and return to work programs within occupational mental health services provided by psychiatric hospitals and clinics in Osaka prefecture. The study focused on whether employment of occupational health physicians and psychological specialists was associated with providing of occupational mental health services. A self-administered questionnaire was mailed to 470 psychiatric hospitals and clinics in Osaka prefecture in 2013. A total of 215 organizations responded (response rate=45.7%). In the psychiatric organizations studied, 46.5% of clinical psychologists and 34.0% of psychiatric social workers who were employed as psychological specialists. Psychiatric medical organization reporting the employment of occupational health physicians was 48.4%. Organizations providing return to work programs was 19.5%; of those that did not provide such programs, 17.7% reported that they would do so in the future. The employment of occupational health physicians increased the percentages of providing of return to work programs. The employment of psychological specialists increased the percentages of psychological counseling services and return to work programs. To provisions of counselling and return to work programs, the employment of occupational health physicians and psychological specialists may be important factors.

    DOI: 10.2486/josh.JOSH-2015-0015-CHO

    DOI: 10.2486/josh.josh-2015-0015-cho

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  • Job Stress and Agentic-Communal Personality Traits Related to Serum Cortisol Levels of Male Workers in a Japanese Medium-Sized Company: A Cross-Sectional Study Reviewed

    Kumi Hirokawa, Toshiyo Taniguchi, Yasuhito Fujii

    INTERNATIONAL JOURNAL OF BEHAVIORAL MEDICINE   22 ( 1 )   11 - 17   2015.2

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    DOI: 10.1007/s12529-014-9403-9

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  • Menopausal Status in Relation to Cardiovascular Stress Reactivity in Healthy Japanese Participants Reviewed

    Kumi Hirokawa, Mako Nagayoshi, Tetsuya Ohira, Mitsugu Kajiura, Akihiko Kitamura, Masahiko Kiyama, Takeo Okada, Hiroyasu Iso

    PSYCHOSOMATIC MEDICINE   76 ( 9 )   701 - 708   2014.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:LIPPINCOTT WILLIAMS & WILKINS  

    To investigate the hypothesis that postmenopausal women demonstrate greater cardiovascular stress reactivity during mental stress tasks than do both premenopausal women and men. Methods: The study included 979 Japanese participants (338 men and 641 women [238 postmenopausal]) aged 16 to 82 years. Blood pressure, heart rate, heart rate variability, and peripheral blood flow were measured at rest and during a mirror drawing stress task and a maze task. Differences between measured variables during tasks and at rest were calculated and considered to represent reactivity to stress. Analyses were adjusted for age and other potential confounding factors. Results: After adjusting for multiple factors, significant group effects were found for systolic blood pressure (SBP), diastolic blood pressure, heart rate, low-frequency (LF), LF/high-frequency, and peripheral blood flow (effect size: partial G 2 = 0.015, 0.011, 0.013, 0.013, 0.008, and 0.009, respectively). Postmenopausal women were more reactive than men to stress for SBP (15.4 +/- 0.8 versus 11.7 +/- 0.6 mm Hg), diastolic blood pressure (10.4 +/- 0.6 versus 8.0 +/- 0.5 mm Hg), heart rate (2.7 +/- 0.5 versus 0.7 +/- 0.4 beats/min), LF (23.0 +/- 5.2 versus 3.2 +/- 3.8 ms(2)/Hz), and peripheral blood flow (j39.0 +/- 3.8 versus j25.9 +/- 2.8 Laser Doppler Perfusion Units) and more reactive than premenopausal women (p G.050) for SBP (15.4 +/- 0.8 versus. 12.4 +/- 0.5 mm Hg) and LF/high-frequency (1.7 +/- 0.1 versus 1.3 +/- 0.1). Conclusions: Postmenopausal Japanese women evidenced greater cardiovascular stress reactivity during mental stress tasks than did Japanese men or premenopausal women. Cardiovascular hyperreactivity could play a role in the higher risks of cardiovascular diseases in postmenopausal women.

    DOI: 10.1097/PSY.0000000000000121

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  • Menopausal Status in Relation to Cardiovascular Stress Reactivity in Healthy Japanese Participants Reviewed

    Kumi Hirokawa, Mako Nagayoshi, Tetsuya Ohira, Mitsugu Kajiura, Akihiko Kitamura, Masahiko Kiyama, Takeo Okada, Hiroyasu Iso

    PSYCHOSOMATIC MEDICINE   76 ( 9 )   701 - 708   2014.11

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    To investigate the hypothesis that postmenopausal women demonstrate greater cardiovascular stress reactivity during mental stress tasks than do both premenopausal women and men. Methods: The study included 979 Japanese participants (338 men and 641 women [238 postmenopausal]) aged 16 to 82 years. Blood pressure, heart rate, heart rate variability, and peripheral blood flow were measured at rest and during a mirror drawing stress task and a maze task. Differences between measured variables during tasks and at rest were calculated and considered to represent reactivity to stress. Analyses were adjusted for age and other potential confounding factors. Results: After adjusting for multiple factors, significant group effects were found for systolic blood pressure (SBP), diastolic blood pressure, heart rate, low-frequency (LF), LF/high-frequency, and peripheral blood flow (effect size: partial G 2 = 0.015, 0.011, 0.013, 0.013, 0.008, and 0.009, respectively). Postmenopausal women were more reactive than men to stress for SBP (15.4 +/- 0.8 versus 11.7 +/- 0.6 mm Hg), diastolic blood pressure (10.4 +/- 0.6 versus 8.0 +/- 0.5 mm Hg), heart rate (2.7 +/- 0.5 versus 0.7 +/- 0.4 beats/min), LF (23.0 +/- 5.2 versus 3.2 +/- 3.8 ms(2)/Hz), and peripheral blood flow (j39.0 +/- 3.8 versus j25.9 +/- 2.8 Laser Doppler Perfusion Units) and more reactive than premenopausal women (p G.050) for SBP (15.4 +/- 0.8 versus. 12.4 +/- 0.5 mm Hg) and LF/high-frequency (1.7 +/- 0.1 versus 1.3 +/- 0.1). Conclusions: Postmenopausal Japanese women evidenced greater cardiovascular stress reactivity during mental stress tasks than did Japanese men or premenopausal women. Cardiovascular hyperreactivity could play a role in the higher risks of cardiovascular diseases in postmenopausal women.

    DOI: 10.1097/PSY.0000000000000121

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  • 労働者の睡眠の質改善のためのチェックリスト作成

    廣川 空美, 藤井 保人, 谷口 敏代, 辻下 守弘

    産業衛生学雑誌   56 ( 臨増 )   574 - 574   2014.5

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  • Associations of Workplace Bullying and Harassment with Pain Reviewed

    Jiro Takaki, Toshiyo Taniguchi, Kumi Hirokawa

    INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH   10 ( 10 )   4560 - 4570   2013.10

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    The aim of this study was to investigate associations of workplace bullying and harassment with headache, stiffness of the neck or shoulders, lumbago, and pain of two or more joints. The subjects in this cross-sectional study were recruited from workers (n = 1,913) at 35 healthcare or welfare facilities in Japan. Because of non-participation or missing data, the number of subjects included in the analysis varied (response rate &gt;= 77.1%). Workplace bullying and harassment were assessed using the Negative Acts Questionnaire. Depression was assessed using the Brief Job Stress Questionnaire. The frequency of pain experienced by workers in the previous month was evaluated using a four-point scale. Many of the associations of person-related bullying, work-related bullying, and sexual harassment with headache, stiffness of the neck or shoulders, lumbago, and pain of two or more joints were positive and significant (p &lt; 0.05). Even after adjustment for depression, some of the associations remained significant (p &lt; 0.05). For example, changes in the prevalence ratio for headache associated with a 1-point increase in the work-related bullying score were 1.05 (95% confidence interval (CI) 1.01 to 1.09) in men and 1.03 (95% CI 1.01 to 1.05) in women after adjustment for age, marital status, employment status, work shift, and depression.

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  • EFFECTS OF LAVENDER AROMA ON SLEEP QUALITY IN HEALTHY JAPANESE STUDENTS Reviewed

    Kumi Hirokawa, Takashi Nishimoto, Toshiyo Taniguchi

    PERCEPTUAL AND MOTOR SKILLS   114 ( 1 )   111 - 122   2012.2

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    This single-blind randomized study investigated the effectiveness of lavender aroma on quality of sleep in healthy Japanese students. The data of seven participants (2 men, 5 women) in the intervention group and eight participants (3 men, 5 women) in the control group were analyzed (M age = 19.0 yr., SD = 0.9). The total procedure comprised 3 days for pre-intervention assessment, 5 days for the intervention, and 3 days for post-intervention assessment. Lavender exposure was compared with the absence of lavender (control). Information regarding the relaxing effect of aromas was provided to examine expectancy effects. Results showed that lavender aroma improved sleepiness at awakening after the intervention. Sex differences and daily variation in quality of sleep during the intervention period were not observed. The findings suggest that nighttime exposure to lavender aroma relieves sleepiness at awakening.

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  • [Associations between workplace bullying, harassment, and stress reactions of professional caregivers at welfare facilities for the elderly in Japan].

    Taniguchi, T., Takaki, J., Harano, K., Hirokawa, K., Takahashi, K., Fukuoka, E.

    Sangyō eiseigaku zasshi = Journal of occupational health   54 ( 1 )   2012

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    DOI: 10.1539/sangyoeisei.B11003

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  • Japanese women's health related to job stress: A review focusing on gender role

    Hirokawa, K.

    Socioeconomic Status and Health Implications   2012

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  • Premenstrual Symptoms in Young Japanese Women: Agency, Communion and Lifestyle Habits Reviewed

    Kumi Hirokawa

    SEX ROLES   65 ( 1-2 )   56 - 68   2011.7

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    DOI: 10.1007/s11199-011-9992-6

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  • 介護老人保健施設職員の働き方と職業性ストレス

    谷口 敏代, 福岡 悦子, 高木 二郎, 廣川 空美, 山本 秀樹

    日本公衆衛生学会総会抄録集   69回   553 - 553   2010.10

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  • Assessment of workplace bullying and harassment: Reliability and validity of a Japanese version of the negative acts questionnaire Reviewed

    Jiro Takaki, Akizumi Tsutsumi, Yasuhito Fujii, Toshiyo Taniguchi, Kumi Hirokawa, Yuri Hibino, Richard J. Lemmer, Hitomi Nashiwa, Da-Hong Wang, Keiki Ogino

    Journal of Occupational Health   52 ( 1 )   74 - 81   2010.1

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    Objectives: Interest in workplace bullying and harassment has been increasing in Japan. At present, the Negative Acts Questionnaire (NAQ) is one of the most frequently used questionnaires for assessing these issues. The purpose of this study was to develop a Japanese version of the NAQ. Methods: We translated the original version of the NAQ using a back-translation method. Participants in this study were recruited from 737 workers at a manufacturing company in Japan. Data were obtained from questionnaires completed by 517 respondents (response rate: 70.1%). Results: We used a cross-validation approach. A three-factor model was obtained from exploratory factor analyses. The confirmatory factor analysis for this model revealed values of 0.94, 0.91, 0.95, and 0.054 for the goodness-of-fit index, the adjusted goodness-of-fit index, the comparative fit index, and the root mean square error of approximation, respectively. Pearson's correlation coefficients for the NAQ scores with the Job Content Questionnaire (JCQ) support scores and the Effort-Reward Imbalance Questionnaire scores for respect and job security were significant (p&lt
    0.001) and the direction of these associations were consistent with our expectations, with the exceptions of the correlations between the NAQ sexual harassment score and the JCQ support scores. Cronbach's alpha coefficients for the scores on the entire NAQ scale and on three subscales (person-related bullying, work-related bullying, and sexual harassment) were 0.90, 0.84, 0.60, and 0.60, respectively. Conclusions: A Japanese version of the NAQ was developed and it appears to have acceptable levels of internal consistency reliability and factor- and construct-validity.

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  • Mental properties of occupational accident victims among manual labers in a shipyard

    FUJI Yasuhito, TANIGUTI Toshiyo, HIROKAWA Kumi, Takaki Jirou

    17   37 - 42   2010

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    DOI: 10.15009/00000618

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  • 社会経済指標と抑うつ状態の関連 Reviewed

    堤 明純, 廣川 空美, 谷口 敏代, 藤井 保人, 高木 二郎

    日本公衆衛生学会総会抄録集   68回   238 - 238   2009.10

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  • Relationships between serum estradiol, follicle-stimulating hormone concentrations, and gender-related identity: A study of perimenopausal women Reviewed

    Kumi Hirokawa, Hirotaka Ochiai, Nobuko Ooi, Norito Kawakami

    PERSONALITY AND INDIVIDUAL DIFFERENCES   46 ( 7 )   744 - 747   2009.5

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  • Effects of gender-related images on beverages intake for young Japanese men and women

    Kumi Hirokawa, Kazuko Yamazawa

    Social Psychology: New Research   147 - 164   2009.1

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  • Community participation in Japan: Japanese collectivism and stereotypical gender-role

    Hirokawa, K.

    Community Participation and Empowerment   2009

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  • Evaluation of an Internet-Based Self-Help Program for Better Quality of Sleep among Japanese Workers: A Randomized Controlled Trial Reviewed

    Etsuji Suzuki, Masao Tsuchiya, Kumi Hirokawa, Toshiyo Taniguchi, Toshiharu Mitsuhashi, Norito Kawakami

    JOURNAL OF OCCUPATIONAL HEALTH   50 ( 5 )   387 - 399   2008.9

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    DOI: 10.1539/joh.L7154

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  • Gendered information on sensory, hedonic and familiarity ratings of green tea by female Japanese students Reviewed

    Kumi Hirokawa, Kazuko Yamazawa

    APPETITE   51 ( 2 )   343 - 346   2008.9

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    DOI: 10.1016/j.appet.2008.03.015

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  • EFFECTS OF COMMUNICATION SKILLS ON STRESS RESPONSES WHILE SPEAKING JAPANESE AND ENGLISH Reviewed

    Kumi Hirokawa, Akihiro Yagi, Yo Miyata

    PSYCHOLOGICAL REPORTS   103 ( 1 )   3 - 10   2008.8

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    The present study was conducted to examine the effects of communication skills on stress responses, such as physiological (blink and heart rate), emotional (state of anxiety and mood), and behavioral responses (smiling and expressing an opinion) in stressful communication situations, specifically answering questions and giving a speech in Japanese and English. Participants were 32 students (16 men and 16 women; M(age) = 19.5 yr., SD = 1.3) attending a Japanese university. A high communication skills group was selected from the upper tertile scores of the Social Skills Inventory, and a low communication skills group was selected from the lower tertile scores. Analysis indicated that individuals who had high communication skills performed without heart-rate increase and with more positive attitude during stressful communication tasks. Individuals who had low communication skills displayed higher anxiety prior to the experiment than those who had high communication skills.

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  • EFFECTS OF COMMUNICATION SKILLS ON STRESS RESPONSES WHILE SPEAKING JAPANESE AND ENGLISH Reviewed

    Kumi Hirokawa, Akihiro Yagi, Yo Miyata

    PSYCHOLOGICAL REPORTS   103 ( 1 )   3 - 10   2008.8

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    The present study was conducted to examine the effects of communication skills on stress responses, such as physiological (blink and heart rate), emotional (state of anxiety and mood), and behavioral responses (smiling and expressing an opinion) in stressful communication situations, specifically answering questions and giving a speech in Japanese and English. Participants were 32 students (16 men and 16 women; M(age) = 19.5 yr., SD = 1.3) attending a Japanese university. A high communication skills group was selected from the upper tertile scores of the Social Skills Inventory, and a low communication skills group was selected from the lower tertile scores. Analysis indicated that individuals who had high communication skills performed without heart-rate increase and with more positive attitude during stressful communication tasks. Individuals who had low communication skills displayed higher anxiety prior to the experiment than those who had high communication skills.

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  • Rationality/anti-emotionality personality and dietary habits in a community population in Japan Reviewed

    Kumi Hirokawa, Chisato Nagata, Naoyoshi Takatsuka, Natsuki Shimizu, Hiroyuki Shimizu

    JOURNAL OF EPIDEMIOLOGY   18 ( 4 )   183 - 190   2008.7

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    DOI: 10.2188/jea.JE2007421

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  • Psychosocial job characteristics and plasma fibrinogen in Japanese male and female workers: the Jichi Medical School cohort study Reviewed

    Kumi Hirokawa, Akizumi Tsutsumi, Kazunori Kayaba

    ATHEROSCLEROSIS   198 ( 2 )   468 - 476   2008.6

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    DOI: 10.1016/j.atherosclerosis.2007.09.035

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  • Job strain and smoking cessation among Japanese male employees: A two-year follow-up study Reviewed

    Etsuko Fukuoka, Kumi Hirokawa, Norito Kawakami, Masao Tsuchiya, Takashi Haratani, Fumio Kobayashi, Shunichi Araki, Hiroyuki Doi

    ACTA MEDICA OKAYAMA   62 ( 2 )   83 - 91   2008.4

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    DOI: 10.18926/AMO/30959

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  • Effects of alcohol-related health education on alcohol and drinking behavior awareness among Japanese junior college students: A randomized controlled trial Reviewed

    Masayo Geshi, Kumi Hirokawe, Toshiyo Taniguchi, Yasuhito Fujii, Norito Kawakami

    ACTA MEDICA OKAYAMA   61 ( 6 )   345 - 354   2007.12

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    DOI: 10.18926/AMO/32874

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  • Sex differences in preferences for coffee sweetness among Japanese students Reviewed

    Kazuko Yamazawa, Kumi Hirokawa, Hiroyuki Shimizu

    PERCEPTUAL AND MOTOR SKILLS   105 ( 2 )   403 - 404   2007.10

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    DOI: 10.2466/PMS.105.2.403-404

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  • The immediate effects of 10-minute relaxation training on salivary immunoglobulin a (s-IgA) and mood state for Japanese female medical co-workers Reviewed

    Toshiyo Taniguchi, Kumi Hirokawa, Masao Tsuchiya, Norito Kawakami

    ACTA MEDICA OKAYAMA   61 ( 3 )   139 - 145   2007.6

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    DOI: 10.18926/AMO/32902

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  • Agency and communion related to mental health in Japanese young adults Reviewed

    Kumi Hirokawa, Itsuko Dohi

    SEX ROLES   56 ( 7-8 )   517 - 524   2007.4

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    DOI: 10.1007/s11199-007-9190-8

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  • Child-Related Strain for Mothers in a Japanese Community Reviewed

    Kumi Hirokawa, Junichi Asano, Mitsuo Masuno, Yoko Usui, Izumi Yoshida, Hiroyuki Shimizu

    The Family Journal   15 ( 1 )   16 - 23   2007

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    DOI: 10.1177/1066480706293539

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  • 地域住民における自殺念慮と社会階層、健康状態との関連 Reviewed

    川上 憲人, 岩田 昇, 竹島 正, 堤 明純, 廣川 空美, 近藤 恭子

    日本公衆衛生学会総会抄録集   65回   859 - 859   2006.10

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  • Impacts of educational level and employment status on mortality for Japanese women and men: the Jichi Medical School cohort study Reviewed

    Kumi Hirokawa, Akizumi Tsutusmi, Kazunori Kayaba

    EUROPEAN JOURNAL OF EPIDEMIOLOGY   21 ( 9 )   641 - 651   2006.9

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    DOI: 10.1007/s10654-006-9049-2

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  • An examination of sex and masculinity/femininity as related to the taste sensitivity of Japanese students Reviewed

    Kumi Hirokawa, Kazuko Yamazawa, Hiroyuki Shimizu

    SEX ROLES   55 ( 5-6 )   429 - 433   2006.9

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    DOI: 10.1007/s11199-006-9097-9

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  • Psychosocial job characteristics and risk of mortality in a Japanese community-based working population: The Jichi Medical School Cohort Study Reviewed

    Akizumi Tsutsumi, Kazunori Kayaba, Kurni Hirokawa, Shizukiyo Ishikawa

    SOCIAL SCIENCE & MEDICINE   63 ( 5 )   1276 - 1288   2006.9

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    DOI: 10.1016/j.socscimed.2006.03.028

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  • Relationship between masculinity-femininity and concession in an experimental collaborative eyewitness testimony Reviewed

    Kumi Hirokawa, Eriko Matsuno, Kazuo Mori, Jun Ukita

    ASIAN JOURNAL OF SOCIAL PSYCHOLOGY   9 ( 2 )   132 - 139   2006.8

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    DOI: 10.1111/j.1467-839X.2006.00190.x

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  • Job strain and sick leave among Japanese employees: a longitudinal study Reviewed

    K Kondo, Y Kobayashi, K Hirokawa, A Tsutsumi, F Kobayashi, T Haratani, S Araki, N Kawakami

    INTERNATIONAL ARCHIVES OF OCCUPATIONAL AND ENVIRONMENTAL HEALTH   79 ( 3 )   213 - 219   2006.3

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    DOI: 10.1007/s00420-005-0027-x

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  • うつ病・自殺予防対策のためのスクリーニングツールとしてのK6/K10調査票の妥当性 Reviewed

    川上 憲人, 近藤 恭子, 堤 明純, 廣川 空美, 岩田 昇, 竹島 正

    日本公衆衛生学会総会抄録集   64回   885 - 885   2005.8

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  • Development of a Checklist for Evaluation of Mental Health Activities at the Workplace Reviewed

    KAWAKAMI Norito, TSUTSUMI Akizumi, KOBAYASHI Yuka, HIROKAWA Kumi, SHIMAZU Akihito, NAGAMI Makiko, IWATA Noboru, HARATANI Takashi

    SANGYO EISEIGAKU ZASSHI   47 ( 1 )   11 - 32   2005.1

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    "The Checklist for Evaluation of Mental Health Activities at the Workplace" was developed for workplace staff evaluating mental health activities in their own workplace. The validity and reliability of the checklist were examined and criteria for evaluation were developed for workplace/organization/companies with 50 or more employees in Japan. The checklist initially included 33 items covering seven major domains of occupational mental health, with a four-point response option, based on the Japanese Guideline for Worker Mental Health in the Workplace and a relevant literature review. A questionnaire was send to 60 members of the Occupational Mental Health Committee (OMHC) of the Japan Society for Occupational Health to ask their opinions on the checklist and on the minimum requirement for each item on the checklist; 30 (50%) responded. A random sample of 1,335 workplaces from a contractor list of workplaces for worker compensation insurance and a questionnaire was send to the personnel department to fill in the checklist; 412 (31.5%) responded and data from 335 of them with 50 or more employees were analyzed. Some OMHC members felt that one of the items (concerning the Total Health Promotion program) should be dropped; thus the checklist was revised to include 32 items, still covering the seven domains. Based on the workplace survey data, most domain scales showed internal consistency reliability at an acceptable level; explanatory factor analysis yielded a four-factor structure that was well concordant with the hypnotized seven-domain structure. Three levels of adequacy of mental health activities were set for each domain scale: "red" (inadequate), "yellow" (minimal), and "green" (adequate). One third of occupational health professionals from 49 workplaces rated the evaluation result based on the checklist as concordant with their view; 95% of them said the checklist would be useful in promoting occupational mental health activities. The study indicated that the checklist had reliability (based on internal consistency reliability) and content- and construct-validity (based on expert opinions, a factor-structure concordant with empirical data, and evaluation by workplace staff). The checklist seems useful in promoting occupational mental health activities. (San Ei Shi 2005; 47: 11-32)<br>

    DOI: 10.1539/sangyoeisei.47.11

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  • Development of a Checklist for Evaluation of Mental Health Activities at the Workplace Reviewed

    KAWAKAMI Norito, TSUTSUMI Akizumi, KOBAYASHI Yuka, HIROKAWA Kumi, SHIMAZU Akihito, NAGAMI Makiko, IWATA Noboru, HARATANI Takashi

    SANGYO EISEIGAKU ZASSHI   47 ( 1 )   11 - 32   2005.1

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    "The Checklist for Evaluation of Mental Health Activities at the Workplace" was developed for workplace staff evaluating mental health activities in their own workplace. The validity and reliability of the checklist were examined and criteria for evaluation were developed for workplace/organization/companies with 50 or more employees in Japan. The checklist initially included 33 items covering seven major domains of occupational mental health, with a four-point response option, based on the Japanese Guideline for Worker Mental Health in the Workplace and a relevant literature review. A questionnaire was send to 60 members of the Occupational Mental Health Committee (OMHC) of the Japan Society for Occupational Health to ask their opinions on the checklist and on the minimum requirement for each item on the checklist; 30 (50%) responded. A random sample of 1,335 workplaces from a contractor list of workplaces for worker compensation insurance and a questionnaire was send to the personnel department to fill in the checklist; 412 (31.5%) responded and data from 335 of them with 50 or more employees were analyzed. Some OMHC members felt that one of the items (concerning the Total Health Promotion program) should be dropped; thus the checklist was revised to include 32 items, still covering the seven domains. Based on the workplace survey data, most domain scales showed internal consistency reliability at an acceptable level; explanatory factor analysis yielded a four-factor structure that was well concordant with the hypnotized seven-domain structure. Three levels of adequacy of mental health activities were set for each domain scale: "red" (inadequate), "yellow" (minimal), and "green" (adequate). One third of occupational health professionals from 49 workplaces rated the evaluation result based on the checklist as concordant with their view; 95% of them said the checklist would be useful in promoting occupational mental health activities. The study indicated that the checklist had reliability (based on internal consistency reliability) and content- and construct-validity (based on expert opinions, a factor-structure concordant with empirical data, and evaluation by workplace staff). The checklist seems useful in promoting occupational mental health activities. (San Ei Shi 2005; 47: 11-32)<br>

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  • Associations of menstrual pain with intakes of soy, fat and dietary fiber in Japanese women

    C Nagata, K Hirokawa, N Shimizu, H Shimizu

    EUROPEAN JOURNAL OF CLINICAL NUTRITION   59 ( 1 )   88 - 92   2005.1

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  • The effects of gender differences in pairs of eyewitnesses on recall memory Reviewed

    Eriko MATSUNO, Kazuo MORI, Kumi HIROKAWA, Jun UKITA

    NINCHISHINRIGAKUKENKYU   3 ( 1 )   83 - 94   2005

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    The purpose of this study is to investigate whether gender differences between pairs of eyewitnesses influence their collaborative recall. Using the MORI technique (Mori, 2003), two different images can be presented on a single screen and viewed separately by two groups of participants through polarizing filters, so that they are unaware of actually viewing two different overlapping images. The participants in this study were 48 undergraduates, assigned to one of three groups: a) eight male pairs, b) eight female pairs, and c) eight mixed-gender pairs. Wearing polarizing sunglasses, the members of each pairing observed two slightly different versions of an event projected on the same screen. The participants were asked initially to report individually on what they had observed (pre-discussion report), and then to discuss the event with the other member of the pairing and make a consensus report (post-discussion report). After one week, the participants were again asked to report individually on their recollections for the event (week-later report). The results indicated that memory performance for female pairs improved significantly in the post-discussion and the week-later reports. An increase in memory performance for male pairs was only found in the post-discussion report. However, no significant improvements in memory scores for the mixed-gender pairs were observed in any of their reports.

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  • P1018 事業場における心の健康づくりの実施状況チェックリストの開発

    川上 憲人, 堤 明純, 小林 由佳, 廣川 空美, 島津 明人, 長見 まき子, 岩田 昇, 原谷 隆史

    産業衛生学雑誌   47   633 - 633   2005

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    DOI: 10.1539/sangyoeisei.KJ00003804265

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  • 地域住民における精神疾患の過去12ヵ月間の有病率、受診行動および自殺関連行動 Reviewed

    川上 憲人, 堤 明純, 廣川 空美, 岩田 昇, 竹島 正

    日本公衆衛生学会総会抄録集   63回   778 - 778   2004.10

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  • 地域就業者における心理社会的仕事の特徴と死亡との関係 JMSコホート研究 Reviewed

    堤 明純, 萱場 一則, 廣川 空美

    日本公衆衛生学会総会抄録集   63回   753 - 753   2004.10

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  • An experimental examination of the effects of sex and masculinity/femininity on psychological, physiological, and behavioral responses during communication situations Reviewed

    K Hirokawa, A Yagi, Y Miyata

    SEX ROLES   51 ( 1-2 )   91 - 99   2004.7

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    DOI: 10.1023/b:sers.0000032317.18968.7e

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  • Soy, fat and other dietary factors in relation to premenstrual symptoms in Japanese women Reviewed

    C Nagata, K Hirokawa, N Shimizu, H Shimizu

    BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY   111 ( 6 )   594 - 599   2004.6

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    DOI: 10.1111/j.1471-0528.2004.00130.x

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  • Comparison of blinking behavior during listening to and speaking in Japanese and English Reviewed

    K Hirokawa, A Yagi, Y Miyata

    PERCEPTUAL AND MOTOR SKILLS   98 ( 2 )   463 - 472   2004.4

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    DOI: 10.2466/pms.98.2.463-472

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  • The relationships of a rationality/antiemotionality personality scale to mortalities of cancer and cardiovascular disease in a community population in Japan Reviewed

    K Hirokawa, C Nagata, N Takatsuka, H Shimizu

    JOURNAL OF PSYCHOSOMATIC RESEARCH   56 ( 1 )   103 - 111   2004.1

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    DOI: 10.1016/S0022-3999(03)00046-1

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  • An examination of masculinity-femininity traits and their relationships to communication skills and stress-coping skills Reviewed

    K Hirokawa, A Yagi, Y Miyata

    SOCIAL BEHAVIOR AND PERSONALITY   32 ( 8 )   731 - 740   2004

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    DOI: 10.2224/sbp.2004.32.8.731

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  • Development of CAS (Communion-Agency Scale): Measurement of positive and negative aspects of gender personality Reviewed

    Itsuko Dohi, Kumi Hirokawa

    Shinrigaku Kenkyu   75 ( 5 )   420 - 427   2004

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Japanese Psychological Association  

    The purpose of this study was to construct a scale to measure both the positive and negative aspects of communion and agency, and to examine relationships among subscales. First, 264 undergraduates, both men and women, rated themselves on 40 items, and CAS (Communion-Agency Scale) was constructed, which consisted of four subscales with 6 items each. Second, 472 undergraduates, 303 women and 169 men, completed the scale, and were assigned, according to their scores on positive communion and agency, to one of four gender types: androgynous, masculine, feminine, and undifferentiated. Analyses of variance for negative communion and agency, with gender types (positive communion and agency) as independent variables, were performed. Factor analysis was also performed on the data. Results indicated that higher positive communion was associated with less negative agency, and higher positive agency with less negative communion. We discussed merits of measuring positive as well as negative aspects of communion and agency.

    DOI: 10.4992/jjpsy.75.420

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  • Development of CAS (Communion-Agency Scale): Measurement of positive and negative aspects of gender personality Reviewed

    Itsuko Dohi, Kumi Hirokawa

    Shinrigaku Kenkyu   75 ( 5 )   420 - 427   2004

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Japanese Psychological Association  

    The purpose of this study was to construct a scale to measure both the positive and negative aspects of communion and agency, and to examine relationships among subscales. First, 264 undergraduates, both men and women, rated themselves on 40 items, and CAS (Communion-Agency Scale) was constructed, which consisted of four subscales with 6 items each. Second, 472 undergraduates, 303 women and 169 men, completed the scale, and were assigned, according to their scores on positive communion and agency, to one of four gender types: androgynous, masculine, feminine, and undifferentiated. Analyses of variance for negative communion and agency, with gender types (positive communion and agency) as independent variables, were performed. Factor analysis was also performed on the data. Results indicated that higher positive communion was associated with less negative agency, and higher positive agency with less negative communion. We discussed merits of measuring positive as well as negative aspects of communion and agency.

    DOI: 10.4992/jjpsy.75.420

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  • Effects of stress coping strategies on psychological and physiological responses during speeches in Japanese and English Reviewed

    K Hirokawa, A Yagi, Y Miyata

    SOCIAL BEHAVIOR AND PERSONALITY   30 ( 2 )   203 - 212   2002

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    DOI: 10.2224/sbp.2002.30.2.203

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  • Japanese social workers' healthy behaviours as related to masculinity: Focus on mental health workers and caregivers of children and nursing home residents Reviewed

    Kumi Hirokawa, Akihiro Yagi, Yo Miyata

    International Journal of Psychology   37 ( 6 )   353 - 359   2002

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Psychology Press Ltd  

    DOI: 10.1080/00207590244000160A

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  • Comparison of French and Japanese individuals with reference to Hofstede's concepts of individualism and masculinity Reviewed

    K Hirokawa, Dohi, I, B Vannieuwenhuyse, Y Miyata

    PSYCHOLOGICAL REPORTS   89 ( 2 )   243 - 251   2001.10

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  • Effect of gender-types on interpersonal stress measured by blink rate and questionnaires: Focusing on stereotypically sex-typed and androgynous types Reviewed

    K Hirokawa, F Yamada, Dohi, I, Y Miyata

    SOCIAL BEHAVIOR AND PERSONALITY   29 ( 4 )   375 - 384   2001

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    DOI: 10.2224/sbp.2001.29.4.375

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  • The effects of sex, self gender type, and partner's gender type on interpersonal adjustment during a first encounter: androgynous and stereotypically sex-typed couples Reviewed

    K Hirokawa, Dohi, I, F Yamada, Y Miyata

    JAPANESE PSYCHOLOGICAL RESEARCH   42 ( 2 )   102 - 111   2000.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1111/1468-5884.00135

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  • An examination of the effects of linguistic abilities on communication stress, measured by blinking and heart rate, during a telephone situation Reviewed

    K Hirokawa, A Yagi, Y Miyata

    SOCIAL BEHAVIOR AND PERSONALITY   28 ( 4 )   343 - 353   2000

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    DOI: 10.2224/sbp.2000.28.4.343

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MISC

  • 簡易職業ストレス調査票による仕事のストレスと疾病休業との関連 2年間追跡調査

    廣川 空美, 大平 哲也, 梶浦 貢, 今野 弘規, 北村 明彦, 木山 昌彦, 岡田 武夫, 磯 博康

    日本公衆衛生学会総会抄録集   75回   327 - 327   2016.10

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  • 介護福祉士の職場特性と個人要因とワーク・エンゲイジメントとの関連

    時實 亮, 谷口 敏代, 高木 二郎, 廣川 空美

    厚生の指標   63 ( 12 )   7 - 13   2016.10

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    Language:Japanese   Publisher:厚生労働統計協会  

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  • Modification effects of feminine personality trait on association between dietary intake and depressive symptoms in Japanese female students

    Kumi Hirokawa, Yoko Takahata, Sayo Uesugi

    INTERNATIONAL JOURNAL OF PSYCHOLOGY   51   678 - 678   2016.7

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  • The Structure of the Consultation Necessary for Construction of Human Relationships of Supervisors and Co-workers in Japanese Welfare Facilities for Elderly

    13 ( 3 )   1 - 10   2014.10

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  • DO CHANGES IN JOB DEMANDS MODIFY ASSOCIATIONS BETWEEN CHANGES IN TESTOSTERONE AND ANDROPAUSE SYMPTOMS?

    K. Hirokawa, T. Taniguchi, Y. Fujii, J. Takaki, A. Tsutsumi

    INTERNATIONAL JOURNAL OF BEHAVIORAL MEDICINE   21   S187 - S188   2014.8

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  • 職場のメンタルヘルス対策のための地域との連携について (特集 産業看護の地域連携 : 家族,行政,社会資源との連携を考える)

    廣川 空美

    産業看護 : 働く人々の健康を支援する産業看護職のネットワークづくりと実践力upの玉手箱   5 ( 3 )   288 - 291   2013

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    Other Link: http://search.jamas.or.jp/link/ui/2013212524

  • Gender Differences in Physical Health Related to Psycho-social Factors

    HIROKAWA Kumi

    Baika Women's University Faculty of Nursing bulletin   1   61 - 72   2011.3

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    Other Link: http://search.jamas.or.jp/link/ui/2014396070

  • The phylogeny of eyeblink behaviors in primates

    Hideoki Tada, Yasuko Omori, Kumi Hirokawa, Hideki Ohira, Masaki Tomonaga

    INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY   61 ( 3 )   339 - 339   2006.9

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  • P2042 Is woman more affected by human relationship at work? : An inquiry into gender differences in relationship between human relations at work and depression(Poster Presentation,Occupational Health in the Age of Decentralization Reform in Japan,The 79th

    Shimono A

    Journal of occupational health   48 ( 0 )   2006.5

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  • ストレッサーと性差--結婚と健康:Evidence Based Marriage研究を目指して (特集 ストレスに性差はあるのか)

    廣川 空美

    性差と医療   2 ( 11 )   1279 - 1283   2005.11

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    Other Link: http://search.jamas.or.jp/link/ui/2006013236

  • The effects of gender differences in pairs of eyewitnesses on recall memory

    MATSUNO Eriko, MORI Kazuo, HIROKAWA Kumi, UKITA Jun

    NINCHISHINRIGAKUKENKYU   3 ( 1 )   83 - 94   2005.8

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    Publisher:The Japanese Society for Cognitive Psychology  

    The purpose of this study is to investigate whether gender differences between pairs of eyewitnesses influence their collaborative recall. Using the MORI technique (Mori, 2003), two different images can be presented on a single screen and viewed separately by two groups of participants through polarizing filters, so that they are unaware of actually viewing two different overlapping images. The participants in this study were 48 undergraduates, assigned to one of three groups: a) eight male pairs, b) eight female pairs, and c) eight mixed-gender pairs. Wearing polarizing sunglasses, the members of each pairing observed two slightly different versions of an event projected on the same screen. The participants were asked initially to report individually on what they had observed (pre-discussion report), and then to discuss the event with the other member of the pairing and make a consensus report (post-discussion report). After one week, the participants were again asked to report individually on their recollections for the event (week-later report). The results indicated that memory performance for female pairs improved significantly in the post-discussion and the week-later reports. An increase in memory performance for male pairs was only found in the post-discussion report. However, no significant improvements in memory scores for the mixed-gender pairs were observed in any of their reports.

    DOI: 10.5265/jcogpsy.3.83

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  • P3040 ジェンダー・パーソナリティと野菜摂取との関連

    西内 恭子, 堤 明純, 廣川 空美, 川上 憲人

    産業衛生学雑誌   47 ( 0 )   827 - 827   2005.4

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    DOI: 10.1539/sangyoeisei.KJ00003804457

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  • メンタルヘルスワークショップ「職場と医療をつなぐ」

    川上 憲人, 堤 明純, 小林 由佳, 峰山 幸子, 鎗田 圭一郎, 市川 一廣, 藤井 智恵子, 近藤 亨子, 村上 優子, 今井 洋子, 福岡 悦子, 廣川 空美, 梅原 桂, 高崎 洋介

    日本職業・災害医学会会誌 = Japanese journal of occupational medicine and traumatology   52   90 - 94   2004.10

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  • 会話中の話し手と聞き手の瞬目行動

    大森 慈子, 廣川 空美

    人間学研究   ( 3 )   47 - 52   2004

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  • A prospective cohort study of soy product intake and total mortality in a community of Japan.

    H Shimizu, C Nagata, N Takatsuka, K Hirokawa, N Morita

    JOURNAL OF NUTRITION   132 ( 3 )   598S - 598S   2002.3

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  • An examination of the effects of stress management training for Japanese college students of social work

    Hirokawa, K., Yagi, A., Miyata, Y.

    International Journal of Stress Management   9 ( 2 )   113 - 123   2002

  • Effects of linguistic abilities on communication stress during a telephone situation measured by eyeblinking and heart rate.

    Hirokawa, K, Yagi, A

    Proceedings of Second International Conference on Psychophysiology in Ergonomics(PIE'98)   84 - 85   1998

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  • Assessment of visual environments by eye fixation related potential.

    Hirokawa, K, Yagi, A

    Proceedings of Second International Conference on Psychophysiology in Ergonomics(PIE'98)   54 - 55   1998

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Research Projects

  • 学校におけるトラウマインフォームドケア概念に基づく支援の展開

    Grant number:24K05848  2024.4 - 2027.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    菊池 美奈子, 廣川 空美

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    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

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  • A study on a confortable work environment for diverse workers

    Grant number:24K06608  2024.4 - 2027.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

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  • A multilevel study of cultural effects on well-being in older people

    Grant number:20K03475  2020.4 - 2023.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

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  • A study of development of scale of couple-unit orientation, and influences on gender personality and mental health

    Grant number:25380861  2013.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Dohi Itsuko

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    Grant amount:\3770000 ( Direct Cost: \2900000 、 Indirect Cost:\870000 )

    The purpose of this study is to clarify that one of the causes of gender personality imbalance, which has been considered to suppress psychological health and social adaptation of individuals, is a couple unit society with premise of marriage. And we developed family relational orientation scale to measure the strength of the tendency of individuals to incorporate couple unit society. As a result, although there was no direct relationship between family relational orientation and gender personality, we found that it affected behavioral aspects such as spouse selection.

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  • Health psychological research on effects of animal behaviors directed at people on their smiles and relaxation.

    Grant number:25380956  2013.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    OMORI YASUKO, HIROKAWA Kumi, Mizuta Toshiro, CHIAKI Noriko, NAKAJIMA Sadahiko

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    Grant amount:\4810000 ( Direct Cost: \3700000 、 Indirect Cost:\1110000 )

    Changes in feelings, facial expressions, and psychosomatic states caused by communication behaviors of animals directed at people were investigated. The results indicated that impressions regarding appearance of dogs differed significantly, depending on the dog’s coat and size. Moreover, impressions regarding faces of dogs was affected by the direction of its gaze, shape of its ears, and opened or closed mouth. Moreover, these impressions were related to likes and dislikes of dogs, as well as the experience of keeping dogs. Furthermore, contact with pet robots resulted in subjective feelings and physiological responses, including saliva amylase, heart rate, and blood pressure. In addition, the effects of contact with pet robots changed, depending on likes and dislikes for animals, the time of contact, the movement of pet robots, and participants’ behaviors corresponding to such movement.

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  • Development of the consultation program for mid-career professional caregivers

    Grant number:24530711  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    TANIGUCHI TOSHIYO, CHO Mynjeong, HIROKAWA Kumi, TAKAKI Jiro

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    Grant amount:\2860000 ( Direct Cost: \2200000 、 Indirect Cost:\660000 )

    The structure of consultation for mid-career professional caregivers indicated five factors such as “problem solving skills.” “empathic understanding and active listening.” “mental and behavioral self-control.” “sociability” and “awareness.”We conducted an interventional approach for mid-career professional caregivers.The feelings of fatigue were significantly decreased and quality of sleep among colleagues and subordinates of the mid-career professional caregivers significantly decreased and increased respectively after the intervention. However, the mid-career professional caregivers were working with a higher psychological strain than their colleagues and subordinates. Our findings suggest that it is necessary to intervene to reduce the psychological strain of mid-career professional caregivers.

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  • Basic study on Quantification of crying and tears : Focusing onphysical and mental health

    Grant number:21500572  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    OMORI Yasuko, HIROKAWA Kumi, CHIAKI Noriko, TATSUHIRA Yukiko

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    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

    In this study, Crying and tears were quantified, then mental and physical changes from shedding tears were investigated. The results indicated that the knowledge of the content of an emotionally arousing movie, or the experience of watching such a movie did not significantly affect the degree of crying. Watching other people cry resulted in emotional responses that were different from smiles, or other expressions. The possibility of measuring the volume of tears using cotton yarn, filter paper, and cotton balls is suggested. Furthermore, changes in physiological responses such as salivary cortisol, heart rate, and blinks were observed.

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  • Mental health service system for job stress control in welfare facilities to the elderly

    Grant number:21530595  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    TANIGUCHI Toshiyo, HARANO Kaori, HIROKAWA Kumi

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    Grant amount:\2730000 ( Direct Cost: \2100000 、 Indirect Cost:\630000 )

    The purpose of this study was to investigate the job stress and mental health service system in the welfare facilities to the elderly. The most facilities have not provide the mental health service as a consultation, because it coped with it in the case-by-case. The high stress levels in the categories of occupational stress factors were higher when compared to the general male and female workers. The percentage of work demands and work control were different among male and female workers. These results suggest the mental health of the welfare facilities to the elderly must consider it for sex differences.

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  • Epidemiological study on association between occupational class and health inequality : role of occupational stress

    Grant number:19590607  2007 - 2009

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    TSUTSUMI Akizumi, KAWAKAMI Norito, KAYABA Kazunori, ISHIKAWA Shizukiyo, HIROKAWA Kumi, HONJO Kaori, WADA Koji, TANIGUCHI Toshiyo, FUJII Yasuto, TAKAKI Jiro, KATO Rika, NAGAMI Makiko

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    Grant amount:\4550000 ( Direct Cost: \3500000 、 Indirect Cost:\1050000 )

    Our prospective studies suggest socioeconomic status affect health outcomes in Japanese workers and psychosocial job characteristics play a role to some extent, mainly by modifying the associations. The pattern of social inequalities in health in Japan appeared differ across demographic characters, such as gender, age, and occupation, and somewhat different from Western countries. Further studies are necessary among diverse work sites and a wider range of occupations. Employing several-wave panel design would be fruitful because reciprocal causal relationships will be evaluated more precisely.

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  • ニューロイメージングによる職業性ストレス理論モデルの脳内機序の解明

    Grant number:17659176  2005 - 2006

    日本学術振興会  科学研究費助成事業  萌芽研究

    川上 憲人, 廣川 空美, 大平 英樹

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    Grant amount:\3300000 ( Direct Cost: \3300000 )

    平成18年度は、PETを使用した実験的研究によるコントロール可能性の記憶部位の探索と、光トポグラフィー(NIRS)を使用した確率学習課題によるコントロール可能性可能性の操作に対する脳機能の解明を行った。
    1. PETを使用した確率学習課題による実験により、コントロール可能性の責任部位を同定し、これらの部位と生理的ストレス反応指標との間の相関を確認した。内側前頭前野(BA32)他の部位が、コントロール可能性が低いとの認知と関連しており、またこの部位の活動が血圧・心拍・免疫・心理反応などのストレス反応と正の相関をしていた。
    2.光トポグラフィーを用いた研究について日立基礎研究所と共同研究契約を締結し、光トポグラフィー測定系に、確率学習課題による心理学的実験システムの組み込みを行い、光トポグラフィーを用いた職業性ストレス理論モデルの脳内機序の解明のための汎用実験系を確立した。
    3.本研究の解析方法について、国際行動医学会(タイ)の場を利用して、関連する専門家から助言を受けるとともに、研究成果の一部を発表した。
    以上から、コントロール可能性の記憶担当部位が前頭前野内側にあることがほぼ明らかとなり、この部位の機能が仕事の要求度や急性ストレスに対する血圧・心拍・免疫・心理反応を修飾していることが示された。職業性ストレスモデルである要求度-コントロールモデルの神経基盤を明確にし、また光トポグラフィーを用いた汎用実験系を確立し、今後の本領域の研究の進展に寄与した。

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  • Epidemiologic study of the association between job stress and cancer incidence and its mechanisms

    Grant number:16390170  2004 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    KAWAKAMI Norito, TSUTSUMI Akizumi, SHIMAZU Akihito

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    Grant amount:\15130000 ( Direct Cost: \14500000 、 Indirect Cost:\630000 )

    The present study project investigated the association between job stressors and cancer incidence, as well as its mechanisms, by conducting two prospective cohort studies (old and new cohort studies) and smaller prospective and cross-sectional epidemiologic studies on the mediators between job stressors and cancer incidence (physiological parameters, such as immune functions, oxidative DNA damage, and health-related behaviors such as diet).
    The project tested the following associations: (1) the association of job stressors based on the two major theories of job stress, i.e., "demand-control-support model" and "effort-reward imbalance model", with all cancer incidence (as well as site-specific cancer incidences), (2) the association of other psychosocial factors at work with all cancer incidence, and (3) the association of the job stressors with physiological parameters (immune functions, oxidative DNA damage) and health-related behaviors (smoking, drug, and diet).
    As the results of the present research project, it is suggested that the job stressors increase the all-cancer incidence. Part of the association seems to be explained by oxidative DNA damage caused by the job stressors. Diet and other health-related behaviors may not play a major role in connecting the job stressors and cancer incidence.

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  • A study of endogenous eyeblinks in primates including human from the standpoint of comparative cognitive scinence.

    Grant number:16530474  2004 - 2006

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    TADA Hideoki, OMORI Yasuko, OHIRA Hideki, TOMONAGA Masaki

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    Grant amount:\3500000 ( Direct Cost: \3500000 )

    The eyeblink behaviors of 71 species of primates were recorded and analyzed in terms of three types of blink attributes ; 1)eyeblink rate, 2) blink duration and 3) sole blink percent (the blinks not associated with head and body movements), comparing with the possible contributing factors ; 1) phylogenetic scale of common term. 2) of family level, 3) head body length, 4) body mass, 5) activity rhythm, and 6) habitat types. The blink frequency increased linearly from nocturnal to diurnal, arboreal to terrestrial and especially along phylogenetic scales such as common term levels and family type levels. Sole blink percents also tend to increase in accordance with phylogenetic process but blink durations were affected only by body size. These findings might suggest that the jumboized or large-sized species have little enemies or predators and decrease the necessity of vigilance, resulting in allowing extra blinks, which leads to frequent, shorter and sole blinks, compared with the smaller and feeble species.

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