Combination of a Preference Pattern with the Triangle Taste Test

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Abstract
The standard triangle test of sensory perception was combined with a preference test to measure the consumers'' ability to distinguish between 2 brands of a product. Assuming an underlying multinomial distribution, the maximum likelihood estimators (MLE) of the conditional probability that a person prefers brand A given that he can discriminate between the 2 products was obtained. The estimator was a ratio of linear combinations of observed multinomial proportions. The variability of this estimator was assessed by means of the jackknife statistic, the asymptotic variance of the MLE and Monte Carlo studies. Application of the results obtained to taste test involving 2 brands of potato chips was discussed.

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