Answer:
sociometer
Explanation:
According to the social comparison model a person measures their worth on the basis of how they are compared to others.
Sociometer theory states that the measure of a person's self esteem is a way to measure a person's interpersonal relations i.e., the degree of inclusion or exclusion in social groups.
Social identity is how a person perceives themselves in a group. In essence the role that they have in a group.