This document discusses several concepts from social psychology including self-concept, social perception, motivation, social loafing, and situation attribution. Self-concept refers to a person's mental representation of themselves, including their beliefs, descriptions, and self-schemata. Social perception involves forming impressions of others based on available information. Motivation can be extrinsic, in response to external pressures or obligations. Social loafing occurs when individuals put in less effort in a group than they would alone. Situation attribution is assuming external factors caused someone's actions rather than internal factors.