This theory addresses the ways in which people perceive and categorize themselves. According to social identity theory, individuals form self-conceptions that are based on two parts: 1) personal or self identity, and 2) collective identity. Personal or self identity refers to our unique, personal qualities such as our beliefs, our abilities and skills, etc. The collective self includes all the qualities that arise from being part of a society, culture, family, groups, clubs, etc. For example, you may identify yourself as a protestant, male, football player, who is very popular with people at school.