This document discusses personality and emotions. It defines personality and how it is influenced by both genetics and environment. Two common models for assessing personality are discussed: the Myers-Briggs Type Indicator and the Big Five personality traits. Emotions and moods are distinguished, with emotions being more intense and directed while moods are less intense and have less clear causes. Sources of emotions and moods include the day of the week, weather, stress levels, social activities, sleep, exercise, age, and gender. The document also discusses how moods can impact creativity and how managers can influence the mood of their employees.