This document summarizes several models of consumer behavior:
1) The economic model is based on substitution effect, price effect, and income effect and assumes consumers maximize utility. However, it ignores non-economic factors.
2) The family decision-making model examines the roles family members play in purchasing decisions.
3) The input-output model views marketing efforts and social environment as inputs, with the decision process and post-purchase behavior as outputs.
4) Psychological models examine how needs and motivation drive behavior, such as Maslow's hierarchy of needs theory.