Source: Image of Group at Sunset, Public Domain, http://mrg.bz/AEZFWN
A person's sense of belonging to and drawing part of his identity from a group.
A person's sense of self; the way an individual defines himself or herself.
A group in which a given person defines herself or himself a member.
A group in which a given person does not define himself or herself a member.
A theory dealing with how individuals and groups develop a sense of identity and relate to other groups in terms of their sense of identity, evaluating the in-group in terms of the out-group.