Social psychology is the scientific study of how people's thoughts, feelings, and behaviors are influenced by others. Attitudes are learned evaluations that influence thought and action. The cognitive dissonance theory proposes that people are motivated to reduce inconsistencies between their attitudes and behaviors. Attitudes have cognitive, affective, and behavioral components and are acquired through social learning, social comparison, genetics, and self-experience. Groups influence individuals through conformity, groupthink, social facilitation, and de-individuation. Compliance results from persuasion techniques like reciprocity and the foot-in-the-door technique.