In the evaluation of new incarnations of existing products, difference testing is among the most commonly used sensory techniques. However, although difference testing is a classical technique, the science of difference testing continues to evolve. As Thurstonian analysis has gained increased acceptance for its ability to measure sensory differences, recent research advances have provided tools, techniques and theory to view sensory difference tests as measurement instruments. In particular, these advances promise to unite equivalence and difference testing, to help with the determination of consumer-relevant action standards, and to inform business risk calculations.
Ennis, J., Rousseau, B., and Ennis, D. (2014). Sensory difference tests as measurement instruments: A review of recent advances. Journal of Sensory Studies, 29, 89-102.
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Sensory difference tests as measurement instruments: A review of recent advances
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