A role is a set of connected behaviors, rights, obligations, beliefs, and norms as conceptualized by people in a social situation. It is an expected or free or continuously changing behavior and may have a given individual social status or social position. It is vital to both functionalist and interactionist understandings of society. Social role theory posits the following about social behavior:

1. The division of labour in society takes the form of the interaction among heterogeneous specialized positions, we call roles.
2. Social roles included appropriate and permitted forms of behavior and actions that recur in a group, guided by social norms, which are commonly known and hence determine the expectations for appropriate behavior in these roles, which further explains the position of a person in the society.
3. Roles are occupied by individuals, who are called actors.
4. When individuals approve of a social role, they will incur costs to conform to role norms, and will also incur costs to punish those who violate role norms.
5. Changed conditions can render a social role outdated or illegitimate, in which case social pressures are likely to lead to role change.
6. The anticipation of rewards and punishments, as well as the satisfaction of behaving pro-socially, account for why agents conform to role requirements.