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Investigation of operationally more powerful duo-trio test protocols: Effects of different reference schemes

Title
Investigation of operationally more powerful duo-trio test protocols: Effects of different reference schemes
Authors
Kim M.-A.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. 25, no. 2, pp. 183 - 191
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The effects of reference schemes (reference mode - constant vs. balanced-, number, position, and nature - stronger vs. weaker) on the performance of replicated duo-trio tests were investigated using four versions of duo-trio protocols (DTF, DTM, DTFR, and DTFM), using two different pairs of tomato juices with different sodium content. Examination of proportion of correct answers (Pc) and d' estimates indicated that when the cognitive strategy was fixed to the comparison of distances (COD) strategy, the constant-reference mode showed the superior test performance over the balanced-reference mode, only for DTFM performed using the stronger reference. Among the tests with the balanced-reference mode, for DTF, estimates of d' of the tests using the stronger-reference (W-odd) were significantly higher than tests using the weaker-reference (S-odd), whereas the opposite was true for DTM, revealing the operational influence of the reference position. In general, the DTF or DTFM using the stronger (saltier) product as a constant-reference is recommended as an operationally more powerful protocol to discriminate products having high sodium contents. © 2012 Elsevier Ltd.
DOI
10.1016/j.foodqual.2012.02.016
Appears in Collections:
엘텍공과대학 > 식품공학전공 > Journal papers
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