This document discusses key aspects of group structure and dynamics. It defines groups as having shared goals and interaction among members. It then outlines that a group's structure includes norms, roles, status, and cohesiveness. Norms are shared beliefs that regulate behavior. Roles consist of how members see their own and others' expected behaviors. Status is a social rank given to members, with higher status allowing more freedom to deviate from norms. Cohesiveness refers to the degree of attraction and motivation for members to stay in the group. Increasing cohesiveness involves making the group smaller and rewarding the group over individuals.