Consumer behavior is influenced by reference groups, social class, culture, and subcultures. [REFERENCE GROUPS] such as friends, celebrities, coworkers can influence purchasing decisions. [SOCIAL CLASS] is a hierarchy that impacts status and consumption patterns. [CULTURE] is learned and influences symbols, rituals, and sharing beliefs. [SUBCULTURES] like age, religion, region also shape behavior. Cross-cultural analysis examines psychological and social similarities and differences between nations to effectively target foreign consumers.