This document discusses several psychological concepts: social facilitation, overconfidence bias, stereotyping, self-efficacy, and Maslow's hierarchy of needs. Social facilitation refers to performing better in competition compared to alone due to motivation from others. Overconfidence bias is believing one's own judgment is better than it is. Stereotyping attributes certain characteristics to a group. Self-efficacy is the belief in one's ability to achieve goals. Maslow's hierarchy of needs includes physiological needs, safety/security, love/belonging, esteem, and self-actualization.