MANUAL Published: 23 December 2020
MNL1320170005

Chapter 3 | Quantitative Descriptive Analysis

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The Quantitative Descriptive Analysis (QDA) Method was first published in 1974, introducing a procedure for quantifying sensory descriptive perception. The method also introduced several concepts new to descriptive testing, including individual data rather than consensus opinion and graphic line scaling. QDA is consumer-oriented in panel selection, training, and attribute language and is useful for a wide variety of product development and marketing activities, including product optimization research. This chapter describes several product applications, the evolution of QDA over the years, and a more rapid approach, diagnostic descriptive analysis, or DDA. It also describes the procedure, rationale, and behavioral science supporting the method.

Author Information

Bleibaum, Rebecca, N.
Dragonfly SCI, Inc., Santa Rosa, CA, US University of California, Davis, Continuing and Professional Education, Sensory & Consumer Science Certificate Program, Davis, CA, US
Clara Tao, K., W.
Tragon Corp.
Thomas, Heather
Dragonfly SCI, Inc., Santa Rosa, CA, US
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Details
Pages: 51–76
DOI: 10.1520/MNL1320170005
ISBN-EB: 978-0-8031-7119-0
ISBN-13: 978-0-8031-7118-3