A team that begins with polite discussion gradually develops unspoken rules, status hierarchies, and patterns of who speaks and who stays silent. Group dynamics are the interactions, processes, and emergent structures that form when people work or live together.

Classic topics include conformity, obedience, social facilitation, social loafing, group polarization, and groupthink. Leadership style, group size, cohesion, and the presence of outgroups all shape behavior. Kurt Lewin’s field theory and later systems approaches treat the group as more than the sum of individual members.

Applied work in organizations, therapy groups, and community settings uses knowledge of dynamics to improve collaboration and reduce destructive patterns. Observation of process—who interrupts, who is ignored, how conflict is handled—often reveals more than formal agendas. Groups can amplify both wisdom and folly.

• Interactions and emergent structures in groups
• Includes influence, status, and decision processes
• Studied in laboratory and real-world settings
• Applied to improve team and organizational function