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Difference test sensitivity: Cognitive contrast effects

Title
Difference test sensitivity: Cognitive contrast effects
Authors
Lee H.-S.O'Mahony M.
Ewha Authors
이혜성
SCOPUS Author ID
이혜성scopus
Issue Date
2007
Journal Title
Journal of Sensory Studies
ISSN
0887-8250JCR Link
Citation
vol. 22, no. 1, pp. 17 - 33
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Judges performed 3-AFC tests between "threshold" concentrations of NaCl solutions and purified water stimuli. For some 3-AFCs, NaCl was the odd stimulus (S-odd); in others, water was the odd stimulus (W-odd). In one condition, interstimulus rinses were different from the stimuli; in a second condition they were the same. The 3-AFCs in which the interstimulus rinses were different from the stimuli yielded a higher d'. When interstimulus rinses were the same as the stimuli, S-odd 3-AFCs had a higher d' than W-odd 3-AFCs. The same was not true when the interstimulus rinses were different from the stimuli. Sequential Sensitivity Analysis and the conditional stimulus model did not furnish a complete explanation for these data. A consideration of additional cognitive contrast effects yielded a possible explanation. © 2007, Blackwell Publishing.
DOI
10.1111/j.1745-459X.2007.00092.x
Appears in Collections:
엘텍공과대학 > 식품공학전공 > Journal papers
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