Cognitive factors affecting taste intensity judgments
1996
Schifferstein, H.N.J.
The mean sensory response is often considered to represent the perceived intensity for a stimulus on the specified attribute. However, a momentary judgment is the outcome of a number of physical, physiological, and psychological processes. Four types of cognitive variables are discussed, that can affect the outcomes of an intensity scaling experiment. First of all, the role of cognitive algebra and concept formation in tasks varying with regard to the number of stimuli to be compared, and with regard to the type and number of response scales used, is discussed. Subsequently, the effects of stimulus set characteristics on context and sequence effects are reviewed. Thirdly, temporal changes in responses during the time course of an experimental session are related to fatiguing and learning. Finally, the role of subjects' expectations is discussed.
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