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Discriminations of the A-Not A difference test improved when " A" was familiarized using a brand image

Title
Discriminations of the A-Not A difference test improved when " A" was familiarized using a brand image
Authors
Kim M.-A.Chae J.-E.van Hout D.Lee H.-S.
Ewha Authors
이혜성
SCOPUS Author ID
이혜성scopus
Issue Date
2012
Journal Title
Food Quality and Preference
ISSN
0950-3293JCR Link
Citation
vol. 23, no. 1, pp. 3 - 12
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The A-Not A difference test can be used to measure the overall sensory difference of two or more products from a reference product. It is an economically efficient method for difference testing because it is more statistically powerful and less prone to working memory problems than the triangle or duo-trio tests. With the A-Not A test, subjects are required to be familiar with the reference product to stabilize their cognitive decision criteria. An effective familiarization procedure is needed. In the present study, the effects of four different familiarization procedures were investigated: (1) 2-AFCR, (2) no-additional familiarization, (3) repeated tastings of the reference, and (4) repeated tastings of the reference with a brand image provided. Two products were discriminated from a reference using 12 subjects over repeated sessions. Comparisons of the test performances, analyzed with d' estimates, showed that there was a tendency toward better discrimination when repeated tastings of the reference were accompanied by a brand image. © 2011 Elsevier Ltd.
DOI
10.1016/j.foodqual.2011.06.007
Appears in Collections:
엘텍공과대학 > 식품공학전공 > Journal papers
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