风险偏爱特征的实验研究

本研究采用等级排序的方法 ,60名被试分别在大、小两种恒定的期望值条件下 ,对不同风险来源和不同风险水平的抽彩方案进行偏爱排序 ,以此来检验组合理论有关风险偏爱模式的假设。结果发现 :( 1 )被试的风险偏爱模式以单峰模式为主 ;( 2 )期望值的大小和不同的风险来源对偏爱模式没有显著影响。通过与美国研究者的结果比较发现 ,中美被试对于固定收益、中等风险和高风险评为最不偏爱的数量上存在显著差异。

A Study on Risk Preference and Some Comparisons between Chinese and American

This research used the rank-order method to assess risk preference in judgment and decision-making.Sixty subjects participated in the experiment.They were divided into two groups and assigned high and low value expectancy respectively.Subjects were asked to make rank order of lottery schemas with various sources and levels of risk based on their risk preference.The results indicated that(1)risk preference tended to be a folded pattern as proposed by Coombs' Portfolio Theory;(2)both value expectancy and risk source seemed to have little effect on risk preference pattern.Significant differences were found between the Chinese and the American subjects.The number of the Chinese subjects,who ranked the constant gain and the high risk as the least preference,was less than the American.The number of the Chinese subjects,who ranked the middle risk as the least preference,was more than the American's.