This document provides an introduction to consumer behavior and market research. It discusses key concepts like rational and irrational consumer behavior, the consumer decision making process, and models for understanding the "black box" of how marketing stimuli influence consumer choices. It also covers important applications of understanding consumer behavior like segmenting markets, designing marketing programs, innovating new products, and staying relevant to changing trends. Demographic, psychographic, behavioral, benefit, and other approaches to segmenting consumer markets are also outlined.