Buyer Decision Processes - Models of Buyer Decision Making

Models of Buyer Decision Making

In an early study of the buyer decision process literature, Frank Nicosia (Nicosia, F. 1966; pp 9-21) identified three types of buyer decision making models. They are the univariate model (He called it the "simple scheme".) in which only one behavioural determinant was allowed in a stimulus-response type of relationship; the multi-variate model (He called it a "reduced form scheme".) in which numerous independent variables were assumed to determine buyer behaviour; and finally the "system of equations" model (He called it a "structural scheme" or "process scheme".) in which numerous functional relations (either univariate or multi-variate) interact in a complex system of equations. He concluded that only this third type of model is capable of expressing the complexity of buyer decision processes. In chapter 7, Nicosia builds a comprehensive model involving five modules. The encoding module includes determinants like "attributes of the brand", "environmental factors", "consumer's attributes", "attributes of the organization", and "attributes of the message". Other modules in the system include, consumer decoding, search and evaluation, decision, and consumption.