Abstract
This simulation study modified the repeated measures mean difference effect size, d=RM , for scenarios with unequal pre- and post-test score variances. Relative parameter and SE bias were calculated for dRM ≠ versus dRM = . Results consistently favored d≠RM over d=RM with worse positive parameter and negative SE bias identified for d=RM for increasingly heterogeneous variance conditions.
DOI
10.22237/jmasm/1257035160
Included in
Applied Statistics Commons, Social and Behavioral Sciences Commons, Statistical Theory Commons
