Social influence is a foundational concept and research domain within social psychology and related disciplines that investigates the processes by which an individual's attitudes, beliefs, values, and behaviors are modified by the presence, actions, or opinions of others. This field examines the mechanisms of persuasion, conformity, obedience, norm formation, and group dynamics, exploring how social interactions and group contexts shape individual and collective outcomes across various social settings. Its significance lies in explaining fundamental aspects of human social behavior, including the formation of social norms, the spread of ideas, decision-making in groups, and the dynamics of power and authority.