BIS/BAS が意思決定フレーミング効果に及ぼす影響

DOI 機関リポジトリ 機関リポジトリ (HANDLE) オープンアクセス

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  • Influence of BIS/BAS on framing effect in decision-making

説明

This study aims to examine the influence of the Behavioral Inhibition System（BIS）and the Behavioral Activation System（BAS）on framing effect in decision-making. The experiment participants included 293 students from a private university in Tokyo. They responded to the Japanese Version of BIS/BAS Scales （Takahashi et al.,2007）and answered two framing questions. These framing questions included the Asian disease problem（Tversky & Kahneman, 1981）and the monetary gamble problem（Kahneman, 2001）, with each being composed of positive framing conditions and negative framing conditions, giving a total of four problems. There were two choices for each condition, and these choices were semantically equivalent, were different for each frame, and consisted of risk aversion and risk taking. The participants chose one option out of the two. For analysis, a logistic regression analysis was conducted with risk aversion, risk taking, and preference reversal as the response variables and the four factors of BIS, BAS（drive）, BAS （reward responsiveness）, and BAS（fun seeking）as the explanatory variables. As a result, the following items were identified:（ 1）in the positive frame conditions, risk taking was observed the higher the BAS （drive）,（ 2）in the negative frame conditions, risk taking was observed the lower the BIS,（ 3）in preference reversal, in the Asian disease problem, preference reversal occurred the lower the BAS（drive）, and in the monetary gamble problem, preference reversal occurred the lower the BIS. The above results were discussed based on prospect theory.

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