They are closely related fields that have roots in other social sciences, such as economics, education, sociology, communication, business. Psychologists attempt to explain roots and consequences of political behavior by applying basic theories originated from social and cognitive psychology. They also develop new theories that would provide or predict psychological explanations of political phenomena. In fact, psychology and political science were combined in one powerful field called political psychology. This field brings together achievements in psychology and political science and illuminates their connections from the point of view of cognitive psychology, social psychology, and political science. This relationship provides a great explanation of social relations and helps people to see why political events evolve in a particular way.