Fitting Parametric Fixed Effect Categorical Models to Effect Sizes: A Neglected Meta-Analytic Approach in Organizational Studies

Hedges and Olkin’s meta-analytic procedures for fitting parametric fixed effect categorical models to effect sizes have been widely used in research in experimental, social, and educational psychology. However, to date, this meta-analytic approach has been largely absent from the management literature in general and organizational behavior literature in particular. This article summarizes Hedges and Olkin’s meta-analytic method by (a) outlining the specific step-by-step analytical procedures, (b) using a simplified notational system, and (c) providing methodological and conceptual rationale for each analysis. The use of this approach can add considerable methodological power and provide a relevant meta-analytic alternative to the study of organizational behavior and management.