In everyday life, individuals interact with relatives, friends and colleagues, share ideas and passions and cooperate with others to pursue common goals. Within each social domain, individuals recognize themselves as a group member with rights and duties to observe. Understanding the importance...

We find that differences in the ability to devote cognitive resources to a strategic interaction imply differences in strategic behavior. In our experiment, we manipulate the availability of cognitive resources by applying a differential cognitive load. In cognitive load experiments, subjects...

It is commonly assumed that identification with a social group is constant throughout the play of a one-shot game in the absence of feedback. We provide evidence which challenges this assumption. We direct subjects to play one of two versions of the prisoner's dilemma game. These versions are...

We propose an experimental method whose purpose is to induce selfish behavior in games for a broad class of social preferences. It provides a theoretical framework for testing game theoretical predictions by confronting subjects with a commonly known payoff matrix actually representing their...