Psychologists claim that being treated kindly puts individuals in a positive emotional state: they then treat an unrelated third party more kindly. Numerous experiments document that subjects indeed 'pay forward' specific behavior. For example, they are less generous after having experienced...

Individuals exhibit a randomization preference if they prefer random mix-tures of two bets to each of the involved bets. Such preferences provide thefoundation of various models of uncertainty aversion. However, it has to ourknowledge not been empirically investigated whether uncertainty-averse...

Bubbles in asset markets have been documented in numerous experiments. Most experiments in which bubbles occur feature a declining fundamental value. This feature has been criticized for being atypical of real financial markets. Here, we experimentally study other ingredients for bubble...

Psychologists claim that being treated kindly puts individuals in a positive emotional state: they then treat an unrelated third party more kindly. Numerous experiments document that subjects indeed 'pay forward' specific behavior. For example, they are less generous after having experienced...

Anecdotal, empirical, and experimental evidence suggests that offering extrinsic rewards for certain activities can reduce people's willingness to engage in those activities voluntarily. We propose a simple rationale for this "crowding out" phenomenon, using standard economic arguments. The...