Grant-in-Aid for Scientific Research (B).
|Section||Joint Research .|
|Research Institution||Asahikawa Medical College|
TAKAHASHI Masaharu Asahikawa Medical College, Department of Medicine, Professor, 医学部, 教授 (80183060)
KILLEEN P. アリゾナ州立大学, 心理学科, 教授
ODA Ryo Nagoya Institute of Technology, Department of Technology, Associate Professor, 工学部, 助教授 (50303920)
MASATAKA Nobuo Kyoto University, Research Institute of Primates, Associate Professor, 霊長類研究所, 助教授 (60192746)
ITO Masato Osaka City University, Department of Psychology, Professor, 文学部, 教授 (70106334)
SAKAGAMI Takayuki Keio University, Department of Psychology, Professor, 文学部, 教授 (90146720)
|Project Fiscal Year
1998 – 2000
Completed(Fiscal Year 2000)
|Budget Amount *help
¥6,400,000 (Direct Cost : ¥6,400,000)
Fiscal Year 2000 : ¥1,600,000 (Direct Cost : ¥1,600,000)
Fiscal Year 1999 : ¥2,200,000 (Direct Cost : ¥2,200,000)
Fiscal Year 1998 : ¥2,600,000 (Direct Cost : ¥2,600,000)
|Keywords||choice / uncertainty / discounting / cross-cultural differences / decision making / selfishness / certainty effect / self as parent / 選択行動 / 不確実性 / 強化 / 報酬 / 老人 / 青年 / 時間割引 / 心理学|
The present study consisted of five research projects.
A.Cross-cultural study of temporal discounting in Japan, Thailand, and Madagascar.
This project investigated rates of temporal discounting in Japan, Thailand, and Madagascar. The results indicated that larger amounts of rewards were discounted less than smaller amounts of rewards. Japanese students discounted rice rewards more than money rewards while Thai students discounted money more than rice rewards. Discounting rates of money in Thailand were larger than those in Japan. Discounting rates of money in Madagascar too steep to produce any effects.
B.Sharing and discounting in Japanese and American students.
This projects compared rates of discounting monetary rewards by sharing. Jappanese and American students chose between shared and unshared monetary rewards under two different conditions of sharing groups (family, relatives, and stranger). The results showed that rates of discounting were larger in Japanese students than in A
merican students. Rates of discounting in the family and relative conditions were lower than in the stranger condition.
C.Choice under uncertainty between Japanese and Indonesian students.
This projects explored choice under uncertainty in Japanese and Indonesian students.The group data indicated the certainty effects and that Indonesian students showed more riskless choice than Japanese students.
D.Self as parent and gender difference.
Scale of self-as-parent was developed and some survey suggested that this scale might be an important concept for examining reproductive choices, career choices, and so on. In addition, gender differences in choosing mates were examined using advertisement.
E.Research meeting on cross-cultural study of choice under uncertainty
Two psychologists were invited to visit Japan and two research meetings on cross-cultural study of choice under uncertainty were held. Implications of the findings obtained in this study were discussed and it was suggested that it is important to study choice in different countries. Less