A tutorial on how to do a Mokken scale analysis on your test and questionnaire data
Klaas Sijtsma, L. Andries van der Ark
British Journal of Mathematical and Statistical Psychology·2016·200 citations
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Over the past decade, Mokken scale analysis (
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) has rapidly grown in popularity among researchers from many different research areas. This tutorial provides researchers with a set of techniques and a procedure for their application, such that the construction of scales that have superior measurement properties is further optimized, taking full advantage of the properties of
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. First, we define the conceptual context of
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, discuss the two item response theory (
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) models that constitute the basis of
<jats:styled-content style="fixed-case">MSA</jats:styled-content>
, and discuss how these models differ from other
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models. Second, we discuss dos and don'ts for
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; the don'ts include misunderstandings we have frequently encountered with researchers in our three decades of experience with real‐data
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. Third, we discuss a methodology for
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on real data that consist of a sample of persons who have provided scores on a set of items that, depending on the composition of the item set, constitute the basis for one or more scales, and we use the methodology to analyse an example real‐data set.
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