This document provides an overview of consumer behavior concepts including the 7 O's framework, the stimulus response model, and the stages of the consumer decision process. It defines consumer behavior as the process individuals engage in to evaluate and acquire products. The stimulus response model shows the input factors that influence the black box of information processing, which leads to outputs like product purchase, feedback, and consumer loyalty. The stages of the consumer decision process are need recognition, information search, evaluation of alternatives, purchase decision, purchase, and post-purchase behavior.