The dmacs package provides functions used to compute indices related to the effects of measurement nonequivalence on observed scores, as described in Nye and Drasgow (2011).
The dmacs package includes helper functions that can compute the various
indices from Nye and Drasgow (2011) for fitted lavaan objects
(lavaan_dmacs) and Mplus output files
(mplus_dmacs). For users of other software and those
interested, specific functions for computing these indices for individual
items in individual focal groups are also available.
Nye, C. & Drasgow, F. (2011). Effect size indices for analyses of measurement equivalence: Understanding the practical importance of differences between groups. Journal of Applied Psychology, 96(5), 966-980.