人間環境学研究
Online ISSN : 1883-7611
Print ISSN : 1348-5253
ISSN-L : 1348-5253
原著
確率情報の図的表現下での確率荷重関数
村上 始玉利 祐樹井出野 尚大久保 重孝竹村 和久
著者情報
ジャーナル フリー

2014 年 12 巻 1 号 p. 51-56

詳細
抄録

A psychological experiment was conducted to estimate probability weighting function whose stimuli were graphically presented. We conducted a modified experiment of Wu and Gonzalez (1996) study by using graphical representation of lotteries. The experiment consisted of 240 binary choices between two gambles. Participants were forty-four members of undergraduate students and graduate students in Waseda University. We fitted the choice data with probability weighting functions proposed by Tversky and Kahneman (1992) and Takemura (1998, 2001). We used the same procedure of Wu and Gonzalez (1996) study for estimating the parameters of both functions and computed Akaike Information Criterion (AIC), which indicated goodness of fit. The choice data confirmed previous findings of risk attitudes (Tversky and Wakker, 1995, Wu and Gonzalez, 1996) in losses. However, the choice data indicated previous findings of risk attitudes (Tversky and Wakker, 1995, Wu and Gonzalez, 1996) in only high probability in gains. Our estimates of Tversky and Kahneman's (1992) function were more linear than the estimates of Wu and Gonzalez (1996). The AIC of Tversky and Kahneman's (1992) function and Takemura's mental ruler model (1998, 2001) indicated that the Takemura's mental ruler model (1998, 2001) fitted better than the Tversky and Kahneman's (1992) model.

著者関連情報
© 2014 人間環境学研究会

この記事はクリエイティブ・コモンズ [表示 - 非営利 - 改変禁止 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
前の記事 次の記事
feedback
Top