This chapter discusses personality, values, emotions, and their impact in organizational behavior. It covers several models of personality including Myers-Briggs, Big Five, Holland's typology. It also discusses values frameworks like Rokeach model and Hofstede's cultural dimensions. Key topics on emotions include the difference between emotions and moods, impact of gender and culture, and Affective Events Theory. The chapter explains how understanding personality, values, and emotions can provide insights into areas like leadership, decision-making, motivation and performance.