Many individuals' choices and valuations involve a degree of uncertainty/imprecision. This paper reports an experiment designed to obtain some measure of imprecision and to examine the extent to which it can explain preference reversals of two opposite forms, one of which appears not to have...

The tension between cooperative and selfish impulses is a challenge for every society. But how is this problem perceived by individual participants in the context of a behavioral games experiment? We first assess individual differences in players' propensity to cooperate or defect in a series of...