Journal
PSYCHOLOGICAL REVIEW
Volume 112, Issue 4, Pages 912-931Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0033-295X.112.4.912
Keywords
decisions from experience; stickiness effect; case-based reasoning; probability learning; learning in games
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Analysis of binary choice behavior in iterated tasks with immediate feedback reveals robust deviations from maximization that can be described as indications of 3 effects: (a) a payoff variability effect, in which high payoff variability seems to move choice behavior toward random choice; (b) underweighting of rare events, in which alternatives that yield the best payoffs most of the time are attractive even when they are associated with a lower expected return; and (c) loss aversion, in which alternatives that minimize the probability of losses can be more attractive than those that maximize expected payoffs. The results are closer to probability matching than to maximization. Best approximation is provided with a model of reinforcement learning among cognitive strategies (RELACS). This model captures the 3 deviations, the learning curves, and the effect of information on uncertainty avoidance. It outperforms other models in fitting the data and in predicting behavior in other experiments.
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