The scientific study of how the imagined, actual and implied presence of others influence an individual's feelings, behaviors and thoughts is referred to as social psychology. It studies and measures the psychological variables in humans. Social psychology explains human behavior as the result of the interaction of social situations and mental states. It focuses on the intrapersonal phenomena such as attitudes, persuasion, social cognition and self-concept as well as on the interpersonal phenomena including social influence, group dynamics and interpersonal attraction. Different approaches, evaluations, methodologies and advanced studies on social psychology have been included in this book. The topics covered herein deal with the core aspects of this discipline. This book aims to serve as a resource guide for students and experts alike and contribute to the growth of the discipline.