Methodology Review: Nonparametric IRT Approaches to the Analysis of Dichotomous Item Scores
Methodology Review: Nonparametric IRT Approaches to the Analysis of Dichotomous Item Scores
This paper reviews developments in nonparametric item response theory (NIRT). Historically, Mokken's (1971) item response theory (IRT) model and procedure of scale analysis have been the starting point for NIRT models; the developments that Mokken's work have inspired and those that originated independently are discussed here. Attention is focused on …