This paper presents a formal theory of reciprocity. Reciprocity means that people reward kind actions and punish unkind ones. The theory takes into account that people evaluate the kindness of an action not only by its consequences but also by the intention underlying this action. The theory...

We analyze a two-stage game between two heterogeneous players.At stage one, common risk is chosen by one of the players. At stagetwo, both players observe the given level of risk and simultaneouslyinvest in a winner-take-all competition. The game is solved theoreticallyand then tested by using...

We show that choices in competitive behavior may entail a gender wage gap. In our experi ments, employees first choose a remuneration scheme (competitive tournament vs. piece rate) and then conduct a real-effort task. Employers know the pie size the employee has generated, the remuneration...