An Experimental Comparison of Risky and Riskless Choice—Limitations of Prospect Theory and Expected Utility Theory
通过激励相容实验,发现前景理论预测的得失反射效应在无风险选择中未出现,而在同一被试的风险选择中却存在,挑战了该理论跨领域的适用性。
Prospect theory, used descriptively for decisions under both risk and certainty, presumes concave utility over gains and convex utility over losses; a pattern widely seen in lottery tasks. Although such discontinuous gain-loss reference-dependence is also used to model riskless choices, only limited empirical evidence supports this use. In incentive-compatible experiments, we find that gain-loss reflection effects are not observed under riskless choice as predicted by prospect theory, even while in the same subjects gain-loss reflection effects are observed under risk. Our empirical results challenge the application of choice models across both risky and riskless domains.