vcov.est_multi_poly_within

object

<p>further arguments passed to or from other methods</p>

<p>Given the output from est_multi_poly_within, the estimated variance-and-covariance matrix is displayed</p>

Framework for the Item Response Theory analysis of dichotomous and ordinal polytomous outcomes under the assumption of within-item multidimensionality and discreteness of the latent traits. The fitting algorithms allow for missing responses and for different item parametrizations and are based on the Expectation-Maximization paradigm. Individual covariates affecting the class weights may be included in the new version together with possibility of constraints on all model parameters.

Francesco Bartolucci

vcov.est_multi_poly_within: Display the estimated variance-and-covariance matrix of est_multi_poly_within object

Description

Usage

Arguments