Hostname: page-component-6766d58669-fx4k7 Total loading time: 0 Render date: 2026-05-24T03:35:56.500Z Has data issue: false hasContentIssue false

Computerized Adaptive Testing for Public Opinion Surveys

Published online by Cambridge University Press:  04 January 2017

Jacob M. Montgomery*
Affiliation:
Department of Political Science, Washington University in St. Louis, Campus Box 1063, One Brookings Drive, St Louis, MO 63130-4899
Josh Cutler
Affiliation:
Department of Political Science, Duke University, 326 Perkins Library, Box 90204, Durham, NC 27708
*
e-mail: jacob.montgomery@wustl.edu (corresponding author)
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the 'Save PDF' action button.

Survey researchers avoid using large multi-item scales to measure latent traits due to both the financial costs and the risk of driving up nonresponse rates. Typically, investigators select a subset of available scale items rather than asking the full battery. Reduced batteries, however, can sharply reduce measurement precision and introduce bias. In this article, we present computerized adaptive testing (CAT) as a method for minimizing the number of questions each respondent must answer while preserving measurement accuracy and precision. CAT algorithms respond to individuals' previous answers to select subsequent questions that most efficiently reveal respondents' positions on a latent dimension. We introduce the basic stages of a CAT algorithm and present the details for one approach to item selection appropriate for public opinion research. We then demonstrate the advantages of CAT via simulation and empirically comparing dynamic and static measures of political knowledge.

Information

Type
Research Article
Copyright
Copyright © The Author 2013. Published by Oxford University Press on behalf of the Society for Political Methodology 
Supplementary material: PDF

Montgomery and Cutler supplementary material

Appendix

Download Montgomery and Cutler supplementary material(PDF)
PDF 51.6 KB