View : 5 Download: 0

Paired versions of various sensory discrimination forced-choice methods and the same-different area theorem

Title
Paired versions of various sensory discrimination forced-choice methods and the same-different area theorem
Authors
Bi, JianKuesten, CarlaLee, Hye-SeongO'Mahony, Michael
Ewha Authors
이혜성
SCOPUS Author ID
이혜성scopus
Issue Date
2018
Journal Title
FOOD QUALITY AND PREFERENCE
ISSN
0950-3293JCR Link1873-6343JCR Link
Citation
vol. 63, pp. 97 - 106
Keywords
Sensory discrimination methodSignal Detection TheoryThurstonian modelSame-different area theoremDual-pair'M&aposplus N&apostestPaired version of specified 'M plus N'Psychometric function
Publisher
ELSEVIER SCI LTD
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
This paper proposes a new type of sensory discrimination methods, i.e., paired versions of various sensory discrimination forced-choice methods, which can be regarded as modified versions of the same-different method. The new type of methods possesses the advantage of the same-different test for measuring overall sensory difference, but overcomes its weaknesses of large variations of response bias and lower testing power. An important fmding is that this type of methods is closely related to the same-different area theorem and its extension. The same-different area theorem establishes an equivalence between the area under the receiver operating characteristic (ROC) curve of the same-different method and the proportion of correct responses (Pc) in the dual-pair method. This paper re-demonstrates and extends the same-different area theorem. An analytical expression of a general psychometric function for the new type of methods is derived. Performances of the new type of methods are evaluated with testing power and sample size in both difference and similarity/equivalence tests. R codes are provided for the new type of methods for P-o Thurstonian discriminal distance delta, and variance of d', where d' is an estimator of delta.
DOI
10.1016/j.foodqual.2017.08.003
Appears in Collections:
엘텍공과대학 > 식품공학전공 > Journal papers
Files in This Item:
There are no files associated with this item.


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE