Publication Date

5-2015

Advisor(s) - Committee Chair

Reagan D. Brown (Director), Elizabeth L. Shoenfelt, Amber N. Schroeder

Degree Program

Department of Psychological Sciences

Degree Type

Master of Science

Abstract

The current study employed a Monte Carlo design to examine whether samplebased and formula-based estimates of cross-validated R2 differ in accuracy when predictor selection is and is not performed. Analyses were conducted on three datasets with 5, 10, or 15 predictors and different predictor-criterion relationships. Results demonstrated that, in most cases, a formula-based estimate of the cross-validated R2 was as accurate as a sample-based estimate. The one exception was the five predictor case wherein the formula-based estimate exhibited substantially greater bias than the estimate from a sample-based cross validation study. Thus, formula-based estimates, which have an enormous practical advantage over a two sample cross validation study, can be used in most cases without fear of greater error.

Disciplines

Applied Behavior Analysis | Psychology

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