MOKKEN Scale: A Pascal Program for Nonparametric Stochastic Scaling

Abstract

A nonparametric Mokken scale analysis (a stochastic elaboration of the deterministic Guttman scale) and program is described. Focus has been placed on three procedures of scaling: a search procedure, evaluation of the whole set of items as a scale and extension of an existing scale. All procedures provided a coefficient of scalability for all the items together that satisfy the criteria of the Mokken model, and an item coefficient of scalability for every item and the statistic delta star which provides information whether the null hypothesis of random response may be rejected. The program is written in Pascal, and it is usable on many microcomputers and larger systems.