Joel L. SidelIn 1974, Stone and Sidel founded the Tragon Corporation, an important sensory consulting and testing company offering full-service consumer goods research. As a pioneering company in the field of sensory evaluation, Tragon has been able to offer unpaalleled capabilities to its customers through the Quantitative Descriptive Analysis (QDA) sensory method, a market evaluation system developed by Stone and Sidel.Cumulatively, the authors have over half a century experience in the field of sensory evaluation. In addition to founding the Tragon Corporation, the authors have conducted domestic and international workshops; designed, analyzed, and reported on over 10,000 sensory tests; and have been sensory consultants to the senior management of most major food and consumer products companies. Read More Read Less