1995-1999

Journal Article: Power and sensitivity of the same-different test: Comparison with triangle and duo-trio methods (1998)

Abstract: Same-different, duo-trio and triangle discrimination methods were compared using vanilla flavored yogurt with and without added sugar as the medium. Two experiments were performed, one in controlled laboratory conditions and the other in conditions approximating more to consumer testing. A modification of the same-different test had greater power than the duo-trio of triangle...

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Journal Article: How to estimate and use the variance of d’ from difference tests (1997)

Abstract: d' is an estimate of delta, a measure of the degree of sensory difference between two products, that can be obtained easily using tables, from the proportion of difference tests performed correctly. Tables of delta are available for the 2-AFC, 3-AFC, triangular and duo-trio tests. Tables for calculating the variance of d' for...

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Journal Article: Sensory difference tests: Thurstonian and SSA predictions for vanilla flavored yogurts (1997)

Abstract: The Thurstonian prediction that judges will get a higher proportion of correct 3-AFC tests than triangle tests was confirmed using a yogurt system. As predicted, d‘ values for the triangle and 3-AFC tests corresponded. Sequential Sensitivity Analysis predictions for the sensitivity of various tasting sequences were confirmed for the 3-AFC test but not...

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Journal Article: A general molecular model for the effect of multi-component mixtures on biological systems (1996)

Abstract: The purpose of this paper is to provide a general theoretical framework for the effect of multicomponent mixtures on biological systems when the components of these mixtures produce similar types of effects such as cardiac stimulation, sweet taste or a particular odor quality. These systems are assumed to involve receptor and, possibly, transducer...

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Journal Article: Probabilistic models for sequential taste effects in triadic choice (1995)

Abstract: Sequential effects and positional response bias are accounted for in new models for triadic choice. These models were applied to data on distilled water and dilute NaCl solutions by use of the triangular and 3-alternative forced-choice methods with 4 participants. The concept of a "conditional stimulus" is introduced to describe stimuli that are...

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Journal Article: KCI, CaCI2, Na+ binding, and salt taste of gum systems (1995)

Abstract: Aqueous nonionic (o.3% w/v) and ionic (0.1% and 0.3% w/v) gun systems containing NaCl, or equal weights of NaCl plus KCl, or NaCl plus CaCl2 were examined. At equivalent molar concentrations of added ions, 23Na NMR transverse relaxation rates (R27 sec-1) showed an increase in average Na- mobility with the addition of K-...

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