Mokken Scale Analysis: Between the Guttman Scale and Parametric Item Response Theory

Schuur, Wijbrandt H. van

doi:10.1093/pan/mpg002

Cited by 319 publications

(327 citation statements)

References 31 publications

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“…Varying item difficulties violate the fundamental assumption of factor analysis that items are parallel (same means and frequency distributions). The most critical consequence of this is that unidimensionality can erroneously be rejected because of the extraction of one or more additional 'difficulty factors' (van Schuur, 2003).…”

Section: Unidimensionalitymentioning

confidence: 99%

Spatial maps in voting advice applications: The case for dynamic scale validation

et al. 2014

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Low-dimensional spatial representations of political preferences are a widespread feature of voting advice applications (VAAs). Currently, VAA spatial maps tend to be defined on the basis of a priori reasoning. This article argues that VAA spatial maps should be empirically validated to safeguard fundamental psychometric properties -in particular, unidimensionality and reliability. We suggest dynamic scale validation as a pragmatic method for improving measurement quality in VAA spatial maps. The basic logic of dynamic scale validation is to exploit early user data as a benchmark against which ex-ante defined maps can be evaluated. We draw on data from one of the most institutionalised VAA settings, Switzerland, to illustrate this dynamic approach to scale validation.

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Section: Unidimensionalitymentioning

confidence: 99%

Spatial maps in voting advice applications: The case for dynamic scale validation

et al. 2014

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“…Mokken Scale Analysis (MSA; Hemker et al, 1995;Meijer & Baneke, 2004;Molenaar & Sijtsma, 1984;Schuur, 2003;Sijtsma & Molenaar, 1987;Sijtsma, 1998). We believe that MSA is a better methodology for analyzing disclosure compared to the more commonly used methods.…”

Section: Data Analysesmentioning

confidence: 99%

“…family). Moreover, unlike the more restrictive parametric IRT models, MSA does not assume that a precise quantification of the differences among respondents is necessary and considers ordinal differences sufficient, which is arguably applicable to disclosure (see Schuur, 2003 for a technical discussion of MSA). According to MSA, a set of items forms a scale if they can be ordered on a single latent dimension representing a construct, i.e.…”

Section: Data Analysesmentioning

confidence: 99%

“…items display the same order of intensity irrespective of the scores on the latent dimension), the scale fits a more restrictive MSA model (i.e. the double monotonicity model); this means that all respondents perceive the item intensities similarly, and thus their latent scores can be compared across subgroups or datasets (Schuur, 2003;Sijtsma & Hemker, 1998).…”

Section: Data Analysesmentioning

confidence: 99%

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Advancing methodology in the study of HIV status disclosure: The importance of considering disclosure target and intent

Dima

Stutterheim

Lyimo

et al. 2014

Social Science & Medicine

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Advancing methodology in the study of HIV status disclosure: The importance of considering disclosure target and intent Dima, A.L.; Stutterheim, S.E.; Lyimo, R.; de Bruin, M. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Acknowledgements:The authors appreciatively acknowledge the financial assistance from RVVZ from the Netherlands, the participation of PLWH in our target group, and the cooperation of the management in the ART clinics where we conducted the study. Abstract:Disclosure of HIV status has been the focus of three decades of research, which have revealed its complex relations to many behaviors involved in HIV prevention and treatment, and exposed its central role in managing the HIV epidemic. The causes and consequences of disclosure acts have recently been the subject of several theoretical models. Although it is acknowledged that individual disclosure events are part of a broader process of disclosing one's HIV status to an increasing number of people, this process has received less theoretical attention. In quantitative studies of disclosure, researchers have often implicitly assumed that disclosure is a single unidimensional process appropriately measured via the total number of one's disclosure acts. However, there is also evidence that disclosure may have different causes and consequences depending on the types of actors involved (e.g. family members, friends) and on the presence or absence of the discloser's intention, suggesting that the unidimensionality assumption may not hold. We quantitatively examined the dimensionality of voluntary and involuntary disclosure to different categories of actors, using data collected via structured interviews in the spring of 2010 from 158 people living with HIV in Kilimanjaro, Tanzania. For voluntary disclosure, nonparametric item response analyses identified two multi-category clusters, family and community, and two single-category dimensions, partner and children. Involuntary disclosure consisted of several single-or twocategory dimensions. Correlation analyses between the resulting disclosure dimensions and stigma and social support revealed distinct relationships for each disclosure dimension. Our results suggest that treating disclosure as a unidimensional construct is a simplification of disclosure...

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“…If a party would agree on the most difficult item ('tax raising powers'), it would be unlikely to disagree on the easy item (that European integration is generally desirable). To examine unidimensionality within this context, I use Mokken scale analysis (van Schuur, 2003), which is based on the idea of the Guttman scale but looks at the difficulty ordering of items in probabilistic terms. The selection of items into a scale in Mokken scale analysis is determined by Loevinger's coefficient of homogeneity h under a null hypothesis test 'that all item pairs are stochastically independent of one another ' (van Schuur, 2003, p. 149).…”

Section: Scaling Issuesmentioning

confidence: 99%

Estimating parties’ policy positions through voting advice applications: Some methodological considerations

Gemenis

2012

Acta Polit

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The past few years have seen the advent and proliferation of Voting Advice (or Aid) Applications (VAAs), which offer voting advice on the basis of calculating the ideological congruence between citizens and political actors. Although VAA data have often been used to test many empirical questions regarding voting behaviour and political participation, we know little about the approaches used by VAAs to estimate the positions of political parties. This article presents the most common aspects of the VAA approach and examines some methodological issues regarding the phrasing of statements, the format of response scales, the reliability of coding statements into response scales and the reliability and validity of scaling items into dimensions. The article argues that VAAs have a lot of potential but there is also much space for methodological improvements, and therefore concludes with some recommendations for designing VAAs.

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Mokken Scale Analysis: Between the Guttman Scale and Parametric Item Response Theory

Cited by 319 publications

References 31 publications

Spatial maps in voting advice applications: The case for dynamic scale validation

Spatial maps in voting advice applications: The case for dynamic scale validation

Advancing methodology in the study of HIV status disclosure: The importance of considering disclosure target and intent

Estimating parties’ policy positions through voting advice applications: Some methodological considerations

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