Why do group members tend to be homogeneous?

Question

Quizplus · Accepted Answer

Group members tend to be homogeneous because many groups attract people who are similar and groups tend to operate in ways that encourage similarity in the members. For example, people who are interested in rock climbing are more likely to join a rock climbing group, so the group will naturally be composed of individuals with similar interests and abilities. Additionally, groups may enforce conformity through social pressure or by rewarding members who conform to group norms.

Why Do Group Members Tend to Be Homogeneous