%0 Journal Article %T Refinements to Effect Sizes for Tests of Categorical Moderation and Differential Prediction %A Jeffrey A. Dahlke %A Paul R. Sackett %J Organizational Research Methods %@ 1552-7425 %D 2018 %R 10.1177/1094428117736591 %X We provide a follow-up treatment of Nye and SackettĄ¯s (2017) recently proposed dMod standardized effect-size measures for categorical-moderation analyses. We offer several refinements to Nye and SackettĄ¯s effect-size equations that increase the precision of dMod estimates by accounting for asymmetries in predictor distributions, facilitate the interpretation of moderated effects by separately quantifying positive and negative differences in prediction, and permit the computation of nonparametric effect sizes. To aid in the implementation of our refinements to dMod, we provide software written in the R programming language that computes Nye and SackettĄ¯s effect sizes with all of our refinements and that includes options for easily computing bootstrapped standard errors and bootstrapped confidence intervals %K categorical moderation %K multiple regression %K differential prediction %K bias %K effect size %U https://journals.sagepub.com/doi/full/10.1177/1094428117736591