In-group Bias

What is it?

In-group bias (or in-group favoritism) is the tendency to favor members of one's own group over outsiders. Henri Tajfel's "minimal group" experiments showed that even arbitrary groupings (such as a stated preference for one abstract painter over another) were enough to trigger preferential treatment of in-group members. The bias often operates without conscious intent. We tend to allocate more resources, extend more trust, give more charitable interpretations and provide more positive evaluations to those we perceive as "us." A common explanation is that cooperating with one's own group once aided survival. In modern contexts, it creates problems. In hiring, we tend to favor candidates who share our background. In performance reviews, we may rate in-group members higher. In conflicts, we assume bad intent from out-groups while granting the benefit of the doubt to our own. The bias perpetuates homogeneity and inequality. It is often invisible to those displaying it: we don't see ourselves as biased; we just "click better" with certain people. Counteracting in-group bias requires awareness of group boundaries, structured decision-making processes that reduce discretion, diverse decision-making bodies, and explicit evaluation criteria applied consistently.