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Gray's Temperament Model: Development of Japanese Version of BIS/BAS Scales and A Behavior Genetic Investigation Using the Twin Method

  • Takahashi Yusuke
    Graduate School of Arts and Sciences, The University of Tokyo Japan Society for the Promotion of Science
  • Yamagata Shinji
    Graduate School of Arts and Sciences, The University of Tokyo Japan Society for the Promotion of Science
  • Kijima Nobuhiko
    Psychological Laboratory, Keio University
  • Shigemasu Kazuo
    Graduate School of Arts and Sciences, The University of Tokyo
  • Ono Yutaka
    Health Center, Keio University
  • Ando Juko
    Faculty of Letters, Keio University

Bibliographic Information

Other Title
  • Grayの気質モデル―BIS/BAS尺度日本語版の作成と双生児法による行動遺伝学的検討
  • Gray ノ キシツ モデル BIS BAS シャクド ニホンゴバン ノ サクセイ ト ソウセイジホウ ニ ヨル コウドウ イデンガクテキ ケントウ
  • ――BIS/BAS尺度日本語版の作成と双生児法による行動遺伝学的検討

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Abstract

The present study investigated the temperament model of Behavioral Inhibition/Activation Systems (BIS/BAS) conceptualized in Gray's Reinforcement Sensitivity Theory with a Japanese sample. In Study 1, a Japanese version of BIS/BAS scales was developed and administered to 446 university students. Results showed that the BIS/BAS scales had sufficient internal consistency and validity. Study 2 examined the relationship between the BIS/BAS scales and biological foundations of individual differences, using the twin method. Twins recruited for Keio Twin Project completed a questionnaire. Results of human behavior genetic analyses of the data from 293 pairs revealed that approximately 30% of observed individual differences in BIS and BAS could be attributed to independent genetic factors. These findings suggested that the BIS and BAS scales had biological validity as personality measures.

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