Abstract:

 

The published literature on difference testing task instructions and methods of statistical analysis is useful when a particular test method has already been chosen.  But how do you choose a method that is specifically well suited to your product category?  Can methods chosen for difference testing of carbonated water with a hint of fruit flavor also apply to a spicy condiment or luxury perfume?  Internal research is necessary to establish the best methods for your company’s own sensory program.  In comparing methods, such as the triangle test and the tetrad method, picking test samples for method comparisons is important.   Methodological superiority won’t be uncovered if the samples are too similar (no discrimination) or too dissimilar (perfect discrimination), and valuable time and resources could be wasted if the right choice is not made.

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In this webinar, we will review a series of steps needed to conduct successful methodological comparisons.  Of particular importance is the use of Torgerson’s method of triads, analyzed using Thurstonian models, to select pairs of samples that will represent small, medium, and large sensory differences to ensure meaningful conclusions.  Real industrial examples will be used to illustrate theoretical and practical applications.

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A digital recording of this webinar is available for purchase ($289).