This course provides a comprehensive introduction to social psychology, examining how people interact with and are influenced by others. Students begin with fundamental concepts of the self, social perception, and cultural dimensions, learning how culture shapes behavior and attitudes. The course covers classic studies on attitudes, cognitive dissonance, social facilitation, and social loafing, highlighting the effects of the presence of others on individual performance. Key topics include conformity, compliance, persuasion, obedience (including the Milgram study), and impression formation, helping students understand how social influence operates. The course also explores attraction, relationship formation, and physical attractiveness, as well as situational vs. dispositional influences and the fundamental attribution error. Students study group dynamics, including stereotypes, prejudice, discrimination, group polarization, groupthink, crowd behavior, deindividuation, and the Stanford Prison Study. Additional modules address prosocial behavior, altruism, and the bystander effect, emphasizing how individuals respond to social situations. Practical review questions reinforce learning and help students apply concepts to real-world interactions. By the end of this course, students will have a deep understanding of how social, cultural, and environmental factors shape human behavior and interpersonal relationships.