It seems that we are all a member of at least one group; most of us are a member of many. Although our membership within some of these groups is probably involuntary (e.g., family), we go out of our way to join other groups. We join book clubs, bowling leagues, congregations, and tag-football teams, just to name a few. Some of us even go so far as to join extremist groups such as terrorist cells or violent political movements. What draws us to seek membership within these varied groups? Why are we willing to sacrifice our own time, energy, and resources for the sake of the groups to which we belong ?
Hogg, Hohman, and Rivera (2008) examined these questions from a social-psychological perspective by contrasting three motivational accounts for group membership. These explanations originate from work on the sociometer model, terror management theory, and uncertainty-identity theory. The sociometer model argues that people have a need to be belong, and that self-esteem acts as a meter of successful group belonging. Greater feelings of inclusion within groups should equate to higher levels of self-esteem according to this model. Terror management theory argues that people are motivated to reduce fear of their own death, and that groups provide consensual belief-confirmation that drives their members to belong. It is comforting to share our world views with like-minded others and to hear them share similar views because it provides us with a sense of meaningful existence. Uncertainty-identity theory argues that people have a basic need to reduce uncertainty about themselves and their place in the world, and that group identification can reduce such uncertainty. Group membership may reduce this uncertainty through its associated norms that prescribe attitudes, feelings, and behaviors for us.
Hogg et al. (2008) conclude that the sociometer model, terror-management theory, and uncertainty-identity theory each play a role in explaining why people join groups. Yet, they argue that uncertainty-identity theory might provide an especially powerful explanation because of its wide generality to all groups and group contexts. What do you think ? Do these explanations account for why you joined the groups that you are a part of, or does some other framework better explain your reasons for group membership ?