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


Germann, Micha; Mendez, Fernando; Wheatley, Jonathan; Serdült, Uwe (2015). Spatial maps in voting advice applications: The case for dynamic scale validation. Acta Politica, 50(2):214-238.

Abstract

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.

Abstract

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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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:06 Faculty of Arts > Institute of Political Science
02 Faculty of Law > Centre for Democracy Studies Aarau (C2D)
08 Research Priority Programs > Digital Society Initiative
Dewey Decimal Classification:320 Political science
340 Law
Scopus Subject Areas:Social Sciences & Humanities > Political Science and International Relations
Language:English
Date:2015
Deposited On:04 Jun 2015 07:23
Last Modified:18 Oct 2021 17:09
Publisher:Palgrave Macmillan
ISSN:0001-6810
OA Status:Closed
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1057/ap.2014.3
Related URLs:http://www.palgrave-journals.com/ap/journal/v46/n3/index.html (Publisher)

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