This document discusses consumer behavior and related marketing concepts. It defines consumer behavior and explains its scope using examples. It discusses the differences between organizational and individual buying behaviors. It also explains the concepts of learning and its implications for marketing, reference groups and their influence on purchasing behaviors, and culture and subcultures and their relevance for segmenting products like ready-to-eat foods and apparel. Finally, it asks what strategies a marketer of consumer durables would use to address post-purchase feelings of consumers.