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Wiley InterScience | ||||||||||||||||||||
  Journal of Sensory StudiesVolume 4 Issue 2, Pages 75 - 86 Published Online: 5 May 2007 © 2010 Wiley Periodicals, Inc. The Journal of the Society of Sensory Professionals
Abstract | References | Full Text: PDF (Size: 483K) | Related Articles | Citation Tracking  LOGARITHMIC TRANSFORMATION OF MAGNITUDE ESTIMATION DATA AND COMPARISONS OF SCALING METHODS Copyright 1989 Food & Nutrition Press, Inc. ABSTRACTABSTRACT.Recent studies comparing magnitude estimation to other scaling methods have been criticized for failure to submit the data to logarithmic transformation before statistical analysis, a procedure which can improve the ability of magnitude estimation scaling to differentiate among products. Data from one of these studies was available for re-analysis, which was conducted both with and without logarithmic transformation of magnitude estimation, category scales and line scales. The ability of magnitude estimation to differentiate among products was improved by log transformation, while the other methods were not. Improvements were associated in pan with reductions in positive skew and improved approximation of the normal distribution. In spite of this improvement, magnitude estimation remained slightly inferior to the other methods especially in the hands of an untrained consumer sample. Received for Publication February 10, 1989 | 
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