Robert K. Merton is deemed as one of the United State's most prominent social scientists his major contribution lies in his work on theories of deviance. The typology of the social pressure, defined by Robert K. Merton, is based on two parameters: a person's ambition or commitment to societal expectations and a person's confidence in how to accomplish their goals. The theory implies that deviant behavior is the product of psychological, political or economic differences within a social group.
It is in democracies that multiple political parties are most common, since democracy increase the chances that people with different opinions will be heard.
