ability to act can be extended in cooperation and in reciprocal exchange with others. Collegiality as a form of solidarity in …

We investigate how group boundaries, and the economic environment surrounding groups, affect altruistic cooperation and … harm those who defect, encouraging a norm of cooperation towards the group. Adding competition between groups causes even … stronger in-group cooperation, but also a qualitative change in punishment: punishment becomes anti-social, harming cooperative …

hence competitive pressure is higher. By contrast, levels of cooperation are very similar across areas. This indicates that … scarcity does not hamper cooperation, at least as long as a sub-survival level has not been reached. Our data further reveal a …

In the Solidarity Game (Selten and Ockenfels, 1998), two "rich" persons can support a "poor" one. A strong positive … correlation between one rich person's solidarity contribution and his expected contribution of the other is observed. This paper …

For many people "solidarity" has become a meaningless word used in slogans - too often used without leading to any … economic consequences. We show in this paper conditions under which solidarity can be a powerful instrument. In a solidary … feelings of mutual exchange (solidarity) within a group. …

would be expected from non-cooperative theory. Second, this possible solidarity among 'brothers in arms' when fighting …

normative categories such as justice, solidarity, responsibility, sustainability, and corporate citizenship. Based on this … framework of interdisciplinary cooperation and identifies potentials for mutual learning. …