Papers & Chapters

Verhagen, look A. J., health Levy, R., Millsap, R.E, and Fox, J.-P. (in press).  Evaluating evidence for invariant items: a Bayes factor applied to testing measurement invariance in IRT models. Journal of Mathematical Psychology.

Fox, J.-P., M. Marsman, J. Mulder, and J. Verhagen (2015). Complex latent variable modeling in educational assessment. Communications in Statistics – Simulation and Computation. (doi:10.1080/03610918.2014.939518) [online]

Verhagen, A. J., & Fox, J.-P. (2013). Longitudinal measurement in health-related surveys. A Bayesian joint growth model for multivariate ordinal responses. Statistics in Medicine, 32, 2988-3005.  [online]

Verhagen, A. J. , & Fox, J.-P (2013). Bayesian tests of measurement invariance. The British Journal of Mathematical and Statistical Psychology, 66(3), 383-401. [online]

Verhagen, A. J. (2012). Bayesian Item Response Theory Models for MeasurementVariance. PhD Thesis, University of Twente. [PDF]

Fox. J.-P., & Verhagen, A.J. (2010). Random item effects modeling for cross-national survey data. In: E. Davidov, P. Schmidt & J. Billiet (Eds.), Cross-Cultural Analysis: Methods and Applications (pp.467-488). Routledge. [PDF]

Conference Presentations:

Verhagen A. J. & Fox, J.-P. (July 26, 2013). Bayes Factor tests for measurement invariance. Paper presented at the IMPS conference, Arnhem, The Netherlands.

Verhagen, A. J. (June 2012). Bayesian IRT models for measurement variance. IOPS, Maastricht.

Verhagen A.J. (July 22, 2011). Analyzing Longitudinal Survey Data: A Bayesian IRT Model with Random Occasion-Specific Item Parameters. Paper presented at the IMPS conference, Hong Kong.

Verhagen A.J. (March 18, 2011). Bayesian models for longitudinal measurement non-invariance. Presentation at the 8th International Amsterdam Conference on Multilevel Analysis, Amsterdam, Nederland.

Verhagen A.J. (November 11, 2010). Country-specific Measurement of Attitude towards Immigration Without Using Anchor Items. Paper presented at the ESS workshop, Den Haag, Nederland.

Verhagen A.J. (July 7, 2010). Large Cross-national Survey Analysis: Bayesian Testing for Measurement Invariance. Presentation at the IMPS conference, Athens, Georgia, USA.

Verhagen, A.J. (December 10, 2009). Testing cross-national invariance; a random effects approach. Poster presentation at the CONBRATRI conference, Florianopolis, Brazil.