Investigating preference and discrimination via tetradic preference testing: A comparison with placebo preference testing and triadic preference testing

Sara King/ August 26, 2015/ Poster/ 0 comments

The No Preference option is employed increasingly, for example in preference testing related to advertising claims. However, published results indicate that relatively few consumers use No Preference, even for a putatively identical pair. To investigate preference and discrimination, and expressed preference consistency made possible from embedded replication, we evaluate three placebo-related tests:

Replicated tetrad simulations for sensitivity quantification and panelist selection

Sara King/ July 29, 2014/ Poster/ 0 comments

Thurstonian-derived models are used widely for interpretation of sensory discrimination test results. Estimates of d´ are a signal-to-noise ratios, for which measurement sensitivity provides important context. Sensitivity is often defined descriptively (e.g. employees) rather than quantitatively (e.g. employees with sensitivity 1.2±0.2 for the relevant product category). We sought to select discrimination panelists based on quantified sensitivity estimates, and to investigate

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