Journal article

Hedging Your Bets by Learning Reward Correlations in the Human Brain

Klaus Wunderlich, Mkael Symmonds, Peter Bossaerts, Raymond J Dolan

Neuron | CELL PRESS | Published : 2011

Abstract

Human subjects are proficient at tracking the mean and variance of rewards and updating these via prediction errors. Here, we addressed whether humans can also learn about higher-order relationships between distinct environmental outcomes, a defining ecological feature of contexts where multiple sources of rewards are available. By manipulating the degree to which distinct outcomes are correlated, we show that subjects implemented an explicit model-based strategy to learn the associated outcome correlations and were adept in using that information to dynamically adjust their choices in a task that required a minimization of outcome variance. Importantly, the experimentally generated outcome ..

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University of Melbourne Researchers