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From Bayes Through Marginal Utility to Effect Sizes: A Guide to Understanding the Clinical and Statistical Significance of the Results of Autism Research Findings
Speech-Language Pathology Faculty Publications
  • Domenic Cicchetti
  • Kathy Koenig
  • Ami Klin
  • Fred Volkmar
  • Rhea Paul, Sacred Heart University
  • Sara Sparrow
Document Type
Article
Publication Date
2-1-2011
Abstract
The objectives of this report are: (a) to trace the theoretical roots of the concept clinical significance that derives from Bayesian thinking, Marginal Utility/Diminishing Returns in Economics, and the 'just noticeable difference', in Psychophysics. These concepts then translated into: Effect Size (ES), strength of agreement, clinical significance, and related concepts, and made possible the development of Power Analysis; (b) to differentiate clinical significance from statistical significance; and (c) to demonstrate the utility of measures of ES and related concepts for enhancing the meaning of Autism research findings. These objectives are accomplished by applying criteria for estimating clinical significance, and related concepts, to a number of areas of autism research.
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Originally published:

Cicchetti, Domenic, Koenig, Kathy, Klin, Ami, Volkmar, Fred, Paul, Rhea, Sparrow, Sara. "From Bayes Through Marginal Utility to Effect Sizes: A Guide to Understanding the Clinical and Statistical Significance of the Results of Autism Research Findings." Journal of Autism & Developmental Disorders 41.2 (2011): 168-174.

DOI:10.1007/s10803-010-1035-6

Citation Information
Domenic Cicchetti, Kathy Koenig, Ami Klin, Fred Volkmar, et al.. "From Bayes Through Marginal Utility to Effect Sizes: A Guide to Understanding the Clinical and Statistical Significance of the Results of Autism Research Findings" (2011)
Available at: http://works.bepress.com/rhea_paul/32/