We show that the distinction between Self and Other, 'us' and 'them,' or in-group and out-group, affects significantly economic and social behavior. In a series of experiments with approximately 200 Midwestern students as our subjects, we found that they favor those who are similar to them on...

We show that the distinction between Self and Other, quot;usquot; and quot;them,quot; or in-group and out-group, affects significantly economic and social behavior. In a series of experiments with approximately 200 Midwestern students as our subjects, we found that they favor those who are...

We show that the distinction between Self and Other, ‘us’ and ‘them,’ or in-group and out-group, affects significantly economic and social behavior. In a series of experiments with approximately 200 Midwestern students as our subjects, we found that they favor those who are similar to...

The asumption that behavior is independent of the identity of those who participate in an economic interaction is fundamental to economists’ understanding of how markets operate, how firms work internally, how nations trade with each other, and much else. In this paper, we show that the...