Factors that govern group identification

A group has an existence that extends beyond the life of any of its individual members. A sense of weakness and anxiety lead us to depend on the group. Once you feel part of a group, you are less afraid.

There is a connection between the need for closure and group identification, including patriotism. When you are uncertain about yourself, you seek certainty, and that certainty is provided by the group ideology that tells you who you are. However, if you are successful as an individual, you feel less dependent on the group.