We study the effect of multigame contact on cooperation. In our experimental setup, each subject plays a pair of indefinitely repeated prisoner’s dilemmas. Multigame contact is present if a subject plays both games with a single partner, and it is absent if a subject plays each of the two...

We study a model where a central player (the principal) bargains bilaterally with each of several players (the agents) to create and share the surplus of a coalitional game. It is known that, if the payments that were previously agreed (with each of the remaining agents) are renegotiated in case...