Understanding what motivates and fosters collective actions has major implications in the regulation and design of public policies, in the governance and management of organizations and has long attracted the interests of scholars and practitioners in economics and business. If trust and...

This paper studies the profile of cooperation emerging in a context in which agents may choose to join one of two groups or stay on their own, in a world where similarity across peers matters. In particular, we investigate the role of heterogeneity in individual contributions, of the level of...