The document discusses several models of consumer behavior, including the economic model which views consumers as rational actors seeking to maximize benefits based on price, income, and substitution effects. It also describes the learning model based on Pavlov's stimulus-response theory, the psychoanalytic model examining complex unconscious motives, and the sociological model analyzing social and group influences. Two additional models covered are Howard Sheth's model with input, hypothetical, output, and external variables, and Nicosia's model outlining four areas of the consumer decision process.