AN ALTERNATIVE METHOD FOR ASSESSING LIKING: POSITIONAL RELATIVE RATING VERSUS THE 9-POINT HEDONIC SCALE

Autor: S.M. Cordonnier, Jeannine F. Delwiche
Rok vydání: 2008
Předmět:
Zdroj: Journal of Sensory Studies. 23:284-292
ISSN: 1745-459X
0887-8250
Popis: An alternative rating method, known as positional relative rating (PRR), or rank rating, was compared with the traditional 9-point hedonic scale. Initially, category scale and line scale versions of PRR were investigated to see which of either was better at differentiating samples. Four lemonades were assessed in duplicate on both scales (category and line). Overall quality, sweetness intensity and sourness intensity were assessed in separate sessions by groups of ∼50 consumers, depending on session. The category scale better differentiated samples than did the line scale for two of three attributes assessed, with differentiation being the same in the third. Subsequently, the overall liking of these same lemonades was assessed by 100 consumers on both the PRR category scale and the traditional 9-point hedonic scale. The differentiation of samples for both scales was equivalent, although mean values were somewhat lower with PRR. PRACTICAL APPLICATIONS This work explores an alternative to the traditional 9-point scale. Positional relative rating (PRR) performs as well as the traditional 9-point scale in differentiating samples, suggesting that it is a viable alternative. However, as PRR seems to give consistently lower mean values than does the traditional 9-point hedonic scale, those using a “hurdle” approach to screen products may wish to lower that hurdle when PRR is used. Findings also suggest that consistency errors are reduced when samples are presented simultaneously (rather than in a serial monadic fashion) and judges are allowed to adjust their ratings.
Databáze: OpenAIRE
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