Outgroup homogeneity is a psychological phenomenon where individuals perceive members of an outgroup as being more similar to each other than they actually are. This often leads to stereotypes, as people assume that all members of the outgroup share the same traits or behaviors, overlooking individual differences. This concept is commonly observed in social psychology and can influence attitudes and behaviors towards different groups, such as racial groups, nationalities, or social classes. By viewing outgroup members as homogeneous, individuals may develop biases that affect their interactions and judgments about those groups.