Groups the theories that explain how the presence, judgment or expectation of other people shapes an individual's thoughts, feelings and behavior, the largest single group among psychology's theories. Belongs here: Attribution Theory, Cognitive Dissonance, Diffusion of Responsibility, Elaboration Likelihood Model, Just-World Hypothesis, Positioning Theory, Self-Perception Theory, Self-Verification Theory, Social Comparison Theory, Social Exchange Theory, Social Identity Theory, Social Penetration Theory, Social Representation Theory, Stereotype Threat Theory, System Justification Theory, Terror Management Theory, Theory of Planned Behavior, Theory of Reasoned Action and Triangular Theory of Love. A theory whose social content is secondary to a developmental, biological or organizational point is filed under that other branch instead.