Voluntary non-commercial Internet-based distributed computing ('social sharing' for short) is an open source activity that is emerging as a distinct mode of resource allocation and economic production. This paper presents an exploratory cross-country analysis of factors determining the output of...

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...

Evidence of gender differences in cooperation in social dilemmas is inconclusive. This paper experimentally elicits unconditional contributions, a contribution vector (cooperative preferences), and beliefs about the level of others' contributions in variants of the public goods game. We show...

We explore whether natural human competitiveness can be exploited to stimulate charitable giving in a controlled laboratory experiment involving three different treatments of a sequential dictator game. Without disclosing the actual amounts given and kept, in each period players are publicly...

Altruists and envious people who meet in contests are symbionts. They do better than a population of narrowly rational individuals. If there are only altruists and envious individuals, a particular mixture of altruists and envious individuals is evolutionarily stable

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...

The intrinsic motivation of a firm's management for engaging in pro-social behavior is an important determinant of a firm's social conduct. I provide the first model in which firms run by morally-motivated managers engage in corporate social responsibility (CSR) in a competitive setting. CSR...

We present the first causal evidence on the persistent impact of enduring competition on prosociality. Inspired by the literature on tournaments within firms, which shows that competitive compensation schemes reduce cooperation in the short-run, we explore if enduring exposure to a competitive...