The goal here is to provide my students with a relatively easy program to use for computing effect size estimates for DIF [item-level invariance] within IRT (parametric). Xcalibre 4.2 offers this for dichotomous variables; IRTpro requires several complex plots; Mplus 7.31 has not taken up this analysis. In particular, any package that handles continuous variables will be appreciated. Thank you for consideration of this query.IRT-DIF effect size computation.