Risk Attitude in Gambles with Years of Life Empirical Support for Prospect Theory

摘要: According to prospect theory, risk attitude changes depending on whether a is perceived as gain or loss relative reference aspiration level. To investigate with respect years of life, the authors elicited utilities at two occasions by certainty equivalent method from 30 women general population. The respondents gave equivalents gambles life. were two-outcome equal probabilities experience each outcome. A shift risk-seeking towards risk-averse was observed increasing expected value gambles. For individual, averaged responses over replications fitted an s- shaped logistic curve that showed excellent fit (r2 ≥ 0.97) for all respondents. level survival can be derived this function and negatively correlated age (r = -0.43, p < 0.025). data are consistent theory may explain why patients opt ...