title: Consistent Differential Discrimination Model Estimation.
abstract: A novel factor-analytic model-the differential discrimination model-for assessing individual differences in scale use has been recently introduced, together with a three-stage estimation approach for model fitting. Unfortunately, the second-stage estimator and, as a consequence, the third-stage estimator of this procedure are not consistent. In this article we show that (a) the differential discrimination model can be expressed in a structural equation model framework, and (b) consistent and simultaneous estimation of all model parameters can be achieved using standard SEM software.
authors.affiliation: a Department of Psychology , Justus-Liebig-University Giessen.
authors.forename: Dirk
authors.initials: D
authors.lastname: Lubbe
authors.affiliation: a Department of Psychology , Justus-Liebig-University Giessen.
authors.forename: Christof
authors.initials: C
authors.lastname: Schuster
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D005163:Factor Analysis, Statistical; D006801:Humans; D015233:Models, Statistical; D012984:Software; D013997:Time Factors
keywords: Response style; continuous response; factor analysis; item response theory; latent trait