Ignoring Irrelevant Information: Situational Determinants of Consumer Learning.

Three experiments examined the effects of situational factors on the ability to learn simple rules for classifying products and estimating prices. In each experiment, multiattribute information about stereo speakers was presented to subjects in a training phase. However, only one attribute was diagnostic. Analytic processing (i.e., the ability to isolate the diagnostic attribute in a subsequent test of product knowledge) was measured. Results showed that analytic processing varied significantly as a function of memory load, processing goals. type of information search, and the relative perceptual salience of product attributes. Surprisingly little holistic (i.e., multiattribute) processing was observed among nonanalytic subjects. Most of these subjects relied on a small subset of attributes, often placing heavy emphasis on a single nondiagnostic attribute. Copyright 1991 by the University of Chicago.