This document discusses consumer decision making and behavior. It begins by explaining that marketers need to understand the consumer decision making process, which can vary between individuals and situations. It then defines decision making as the process of choosing between alternatives. There are two types of decisions - programmed, which are routine purchases, and non-programmed, which are complex purchases that require more thought. The document outlines the three levels of consumer decision making - extensive problem solving for new purchases, limited problem solving for recurring purchases, and routinized problem solving for routine, low-involvement purchases. It provides examples to illustrate each level of decision making.