The document defines key concepts related to emotional intelligence including emotion, intelligence, and the three main models of emotional intelligence: ability model, mixed model, and trait model. The ability model focuses on perceiving, reasoning with, understanding, and managing emotions. The mixed model includes five factors: self-awareness, self-regulation, motivation, empathy, and social skills. The trait model views emotional intelligence as self-perceptions of emotional abilities within a personality framework. The document provides details on each model and concludes that emotional intelligence incorporates knowing one's own feelings, using feelings to make good decisions, managing moods, staying motivated and optimistic, having empathy for others, and developing social skills.