This document summarizes key concepts about consumer decision making from a marketing lecture. It discusses:
1) The five stages of the consumer decision making process: need recognition, information search, evaluation of alternatives, purchase, and post-purchase evaluation.
2) Types of consumer buying decisions based on involvement: routine response, limited decision making, and extensive decision making. More involved purchases require more search and consideration of alternatives.
3) Cultural, social, and psychological factors that influence consumer decisions at each stage of the process, such as recommendations from personal contacts, brand perceptions, and efforts to reduce cognitive dissonance after purchase.