A choose-all-that-apply (CATA) question allows respondents to select multiple answers from a list. A technique called answer piping displays the respondent’s selections as possible responses in a subsequent question. Answer piping was used to allow consumers to shortlist wine-producing regions before ranking those regions for quality in a Chilean red wine consumer study conducted in fall 2007.
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Sensory professionals seeking guidance in best practices often turn to publications from standards organizations such as ISO and ASTM. A review of guides related to sensory equivalence testing will be presented. In several cases the power approach is prescribed for determining equivalency, but this approach is problematic. It attempts to control beta risk in the difference test and declare samples
Producing products of reliable quality is vitally important to the food and beverage industry. In particular, companies often fail to ensure that the sensory quality of their products remains consistent, leading to the sale of goods which fail to meet the desired specifications or are rejected by the consumer. This book is a practical guide for all those tasked with
This abstract is unavailable. Please contact us for additional information. Castura, J.C. (2010). Similarity testing & equivalence testing. In ASTM E-18.04 Seminar on Discrimination Methods. April 22. St. Louis, MO, USA.
Equivalence testing has applications that include ingredient substitution and product matching. Statistical methods for determining equivalency were the subject of some interest in this journal prior to the Sensometrics 2008 conference (Bi, 2005; Meyners, 2007; Bi, 2007; Ennis, 2008a; Bi, 2008; Meyners, 2008; Ennis 2008b). A mini-symposium on equivalency at Sensometrics 2008 provided an opportunity for collegial discussion.