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Induction of scaling errors

Title
Induction of scaling errors
Authors
Park J.-Y.Jeon S.-Y.O'Mahony M.Kim K.-O.
Ewha Authors
김광옥
SCOPUS Author ID
김광옥scopus
Issue Date
2004
Journal Title
Journal of Sensory Studies
ISSN
0887-8250JCR Link
Citation
vol. 19, no. 4, pp. 261 - 271
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Judges were required to rate the total intensity of NaCl solutions using a variety of unstructured category and line scales under a 'rank-rating' protocol and a traditional protocol that did not allow retasting or the reviewing of scores. The various scales and protocols induced two types of scaling errors. The first type was named a different-stimulus error. This involved a judge rating a stronger stimulus as equal to or less than a weaker stimulus. The second type was named a same-stimulus error. This involved a judge giving different ratings to two stimuli of equal concentration. For all scales, judges made a higher proportion of same-stimulus errors than different-stimulus errors. 'Rank-rating ' only reduced the proportion of different-stimulus errors. It was hypothesized that a category scale with fewer categories would induce a higher level of different-stimulus errors but lower level of same-stimulus errors. These trends were noted but not always significantly. For line scales, the equivalent hypotheses regarding line length were either weak or not supported. It would appear that increasing the length of a line scale is not always equivalent to increasing the number of categories in a category scale.
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엘텍공과대학 > 식품공학전공 > Journal papers
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