title: Goodness of Fit in Item Response Models.
abstract: It is shown that goodness-of-fit criteria developed for the evaluation of multivariate structural models can be applied to assist in evaluating the dimensionality of a test consisting of binary items, and correlative methods regularly employed in factor analysis can be used to diagnose causes of misfit.
authors.forename: R P
authors.initials: RP
authors.lastname: McDonald
authors.forename: M M
authors.initials: MM
authors.lastname: Mok