Fundamental Attribution Error Self Serving Bias Altruism Just world hypothesis Mere Exposure Effect Outgroup v In group Attribution stereotype conformity actor observer bias normative social influence Deindividuation social reciprocity norm Cognitive Dissonance Theory belief preserverence bystander effect halo effect Central route of persuasion v Peripheral route of persuastion group polarization foot in the door Milgrim experiment Asch experiment Zimbardo experiment