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Can the same-different test use a β-criterion as well as a τ-criterion?

Title
Can the same-different test use a β-criterion as well as a τ-criterion?
Authors
Lee H.-S.van Hout D.Hautus M.O'Mahony M.
Ewha Authors
이혜성
SCOPUS Author ID
이혜성scopus
Issue Date
2007
Journal Title
Food Quality and Preference
ISSN
0950-3293JCR Link
Citation
Food Quality and Preference vol. 18, no. 4, pp. 605 - 613
Keywords
τ-criterion and β-criterionCognitive strategiesDecision rulesROC curveSame-different testSignal detection
Indexed
SCIE; SCOPUS scopus
Document Type
Article
Abstract
Using low concentration NaCl and water stimuli, judges performed same-different tests and single stimulus discrimination tests. The data were subjected to a signal detection analysis. For single stimulus judgments, a β-criterion, dividing salt vs water is assumed for calculating d′. For the same-different method, a τ-criterion, a sensory yardstick designating the degree of difference required for a 'different' judgment, is assumed. ROC analysis indicated that for single stimulus judgments, a cognitive strategy involving a β-criterion was confirmed. Yet, ROC analysis for the same-different test indicated that prior or current use of a β-criterion carried over into the same-different test for some judges, giving a mixture of τ- and β-criteria. © 2006 Elsevier Ltd. All rights reserved.
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DOI
10.1016/j.foodqual.2006.03.024
Appears in Collections:
엘텍공과대학 > 식품공학전공 > Journal papers
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