Ingroup-outgroup dynamics refer to the social psychology concept where individuals categorize themselves and others into groups. The "ingroup" consists of those with whom one identifies, while the "outgroup" includes those perceived as different or outside that group. This categorization can lead to favoritism towards the ingroup and bias against the outgroup, influencing behaviors and attitudes. These dynamics can manifest in various contexts, such as ethnic groups, sports teams, or social clubs. They often contribute to social cohesion within the ingroup but can also result in conflict, discrimination, and prejudice against the outgroup, impacting societal relationships and interactions.