In-group bias is a psychological phenomenon where individuals favor members of their own group over those in other groups. This can manifest in various ways, such as preferential treatment, positive evaluations, and increased trust towards in-group members. The bias often stems from a sense of belonging and shared identity, which can enhance social cohesion. This bias can lead to discrimination against out-group members, affecting social interactions and decision-making. It is commonly observed in contexts like sports teams, political affiliations, and cultural groups. Understanding in-group bias is essential for addressing issues related to prejudice and promoting inclusivity.