Organizational behavior is the study of how individuals and groups act within organizations. It examines topics like motivation, leadership, and communication. Some important early contributors to the field include F.W. Taylor with scientific management, Mary Parker Follett focusing on the human side of organizations, and the Hawthorne Studies which found the Hawthorne Effect. Personality refers to an individual's unique characteristics and traits. Factors like heredity, environment, and self-concept influence personality. Personality can be understood using dimensions like extraversion, agreeableness, conscientiousness, emotional stability, and openness. Locus of control, authoritarianism, Machiavellianism, and self-monitoring are