We all belong to many groups; you’re a member of your sociology class, and you're a member of your family; you may belong to a political party, sports team, or the crowd watching a sporting event; you...We all belong to many groups; you’re a member of your sociology class, and you're a member of your family; you may belong to a political party, sports team, or the crowd watching a sporting event; you’re a citizen of your country, and you're a part of a generation. You may have a somewhat different role in each group and feel differently in each. Groups vary in their sizes and formalities, as well as in the levels of attachment between group members, among other things.