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Review
. 2016 May;105(3):445-58.
doi: 10.1002/jeab.208.

A survey of residual analysis and a new test of residual trend

J J McDowell  1 , Olivia L Calvin  1 , Bryan Klapes  1
Affiliations
Review

A survey of residual analysis and a new test of residual trend

J J McDowell et al. J Exp Anal Behav. 2016 May.

Abstract

A survey of residual analysis in behavior-analytic research reveals that existing methods are problematic in one way or another. A new test for residual trends is proposed that avoids the problematic features of the existing methods. It entails fitting cubic polynomials to sets of residuals and comparing their effect sizes to those that would be expected if the sets of residuals were random. To this end, sampling distributions of effect sizes for fits of a cubic polynomial to random data were obtained by generating sets of random standardized residuals of various sizes, n. A cubic polynomial was then fitted to each set of residuals and its effect size was calculated. This yielded a sampling distribution of effect sizes for each n. To test for a residual trend in experimental data, the median effect size of cubic-polynomial fits to sets of experimental residuals can be compared to the median of the corresponding sampling distribution of effect sizes for random residuals using a sign test. An example from the literature, which entailed comparing mathematical and computational models of continuous choice, is used to illustrate the utility of the test.

Keywords: cubic polynomial; descriptive adequacy; model selection; quantitative models; residual trends.

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