Organizational behavior (often abbreviated OB) is a field of study that investigates the impact that individuals, groups, and structure have on behaviorwithin organizations, for the purpose of applying such knowledge toward improving an organization's effectiveness. It studies three determinants of behavior in organizations: individuals, groups, and structure. In addition, OB applies the knowledge gained about individuals, groups, and the effect of structure on behavior in order to make organizations workmore effectively. Emphasizes behavior as related to concerns such as jobs, work, absenteeism, employment turnover, productivity, humanperformance, and management. Core topics of motivation, leader behavior and power, interpersonal communication, group structure and processes, learning, attitude development and perception, change processes, conflict, work design, and work stress