This document discusses the nature of social interaction and social processes. It defines social interaction as how people influence each other through attitudes, feelings and actions. There are three types of social interaction: person-to-person, person-to-group, and group-to-group. Social processes are recurrent patterns of interaction that have stability. Basic social processes include cooperation, competition, and conflict, while derived processes arise from the basic ones, such as assimilation, accommodation and differentiation. Social processes can be classified by whether they promote unity or opposition.