The motivation value of confidence postulates that individual effort provision is increasing in beliefs on one's own productivity. This relationship also holds for overconfident individuals who have exaggerated productivity beliefs (motivation value of overconfidence). We present first empirical...

We assess the predictive power of a model of other-regarding preferences - inequality aversion - using a within-subjects design. We run four different experiments (ultimatum game, dictator game, sequential-move prisoners' dilemma and public-good game) with the same sample of subjects. We elicit...