Title: Bayesian hypothesis testing for psychologists: A tutorial on the Savage-Dickey method
Authors: Wagenmakers, Eric-Jan ×
Lodewyckx, Tom
Kuriyal, Himanshu
Grasman, Raoul #
Issue Date: 12-Jan-2010
Publisher: Academic press inc elsevier science
Series Title: Cognitive psychology vol:60 issue:3 pages:158-189
Abstract: In the field of cognitive psychology, the p-value hypothesis test has established a stranglehold on statistical reporting. This is unfortunate, as the p-value provides at best a rough estimate of the evidence that the data provide for the presence of an experimental effect. An alternative and arguably more appropriate measure of evidence is conveyed by a Bayesian hypothesis test, which prefers the model with the highest average likelihood. One of the main problems with this Bayesian hypothesis test, however, is that it often requires relatively sophisticated numerical methods for its computation. Here we draw attention to the Savage-Dickey density ratio method, a method that can be used to compute the result of a Bayesian hypothesis test for nested models and under certain plausible restrictions on the parameter priors. Practical examples demonstrate the method's validity, generality, and flexibility. (C) 2009 Elsevier Inc. All rights reserved.
ISSN: 0010-0285
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Quantitative Psychology and Individual Differences
× corresponding author
# (joint) last author

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