Hessen, David - In: Psychometrika 77 (2012) 4, pp. 693-709
A multinormal partial credit model for factor analysis of polytomously scored items with ordered response categories is derived using an extension of the Dutch Identity (Holland in Psychometrika 55:5–18, <CitationRef CitationID="CR11">1990</CitationRef>). In the model, latent variables are assumed to have a multivariate normal...</citationref>