This document discusses personality and its key determinants and traits. It defines personality as the dynamic organization within an individual that determines their adjustments to their environment. Personality is shaped by heredity, environment, family contributions, socialization, and situational factors. There are 16 primary personality traits and their opposites that describe consistent patterns of behavior. Important traits for organizational behavior include authoritarianism, locus of control, risk-taking, and achievement orientation. The document also contrasts type A personalities, which are impatient and work-focused, from type B personalities, which are more relaxed and less urgent.