THE GENERATION OF SENSORY EXPECTATION BY EXTERNAL CUES AND ITS EFFECT ON SENSORY PERCEPTION AND HEDONIC RATINGS: A REVIEW

Expectations are generated by a variety of factors. We indicate a flow chart for the role of expectations at the point of choice and in influencing sensory perception at the time of consumption. We review the sparse literature on how advertising, packaging and information generate sensory expectations. The application of various theories to explain the observed effects of sensory expectations are reviewed. There is overwhelming evidence for assimilation-contrast effect, although no studies have been specifically designed to detect it. Finally we review the reasons why individuals might differ in the way that expectations influence sensory perception. These reasons include ideas from persuasion literature and private body consciousness. A number of behavioral hypothesis that follow from these theories are developed.

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