Mokken scale spss software

Sample size in mokken scales is mostly studied on simulated data. Spssx procedure and standalone programs for the mokken scale. Polychotomous items, can be regarded as a generalization as well as a. Here are citations to the two articles i assign in my irt course on nonparametric irt. Tilburg university mokken scale analysis for polychotomous. It consists of an item selection algorithm to partition a set of items into mokken scales and several methods to check the assumptions of two nonparametric item response theory models. R, an opensource statistics program, was used to generate the descriptive. How can i sum a participants score on my newly created mokken scale. Data were converted from spss to a format suitable for analysis in r using. Initial analysis suggested the ppeq did not form a singlescale. Mokken scale analysis of mental health and wellbeing. This method is named after the political scientist rob mokken who suggested it in 1971. In general i find that mokken scaling is a good approach for many practical scale analyses, but i recommend that you read at least a few articles on it. Spssx procedure and standalone programs for the mokken.

These scales satisfy a set of scaling conditions, one. The overall value of the scale should be higher than. You also should do a thorough job of missing data analysis and descriptive statistics, including correlations. A mokken scale is a unidimensional scale that consists of hierarchicallyordered items that measure the same underlying, latent concept. Mokken scales have been used in psychology, education, political science, public opinion, medicine and nursing. Data were entered into spss ibm corp, usa with items 3 to 7 and item 12. After you create a mokken scale, can you get an overall. Getting started with mokken scale analysis in r citeseerx. Userfriendly commercial package 225 oneuser licence. A more elaborate book on learning r for spss and sas. The mokken scale is a psychometric method of data reduction. This program, which is called msp mokken scale analysis for 174 k. Mokken scale analysis using hierarchical clustering procedures. Data from 802 participants were analysed using mokken scaling analysis.

Mokken scale analysis is a nonparametric item response theory. For dichotomous items a reliabi lity measure based on mokkens scaling model has been discussed in refs. A mokken scale analysis of the peer physical examination. Mokken scale analysis and confirmatory factor analysis of. Dos program with windows shell apparently fails under windows 7. Mokken scale analysis msa can be used to assess and build unidimensional scales from an item pool that is sensitive to multiple dimensions. A nonparametric item response theory model, the mokken scale analysis, and program are described. Data were analysed using the commercially available software mokken scaling analysis for polytomous items msp for.

Mokken scaling software is available within the public domain statistical. Unidimensionality and reliability under mokken scaling of the dutch. I came across guttman scalograms and mokken scaling techniques. Mokken scale analysis of mental health and wellbeing questionnaire item responses. Mokken scale analysis mokken scale analysis eeecon. What are the minimal sample size requirements for mokken scaling.