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Department Faculty

Michael C. Edwards

I am interested in measurement issues in the social sciences. Most of my work has been in the realms of item response theory (IRT) and factor analysis. Some topics I'm currently interested in or working on include: multidimensional IRT (a.k.a. item factor analysis) models, minimum detectable change, multi-stage adaptive testing, measurement models for multiple reporters, local dependence diagnostics, and model fit (and misfit). In addition, I have developed software to allow researchers to estimate item factor analysis models using MCMC.

Selected Publications

Houts, C.H., & Edwards, M.C. (2015). Comparing surface and underlying local dependence levels via polychoric correlations. Applied Psychological Measurement, 39, 293-302.

Edwards, M.C., Wirth, R.J., Houts, C.R., & Bodine, A.J. (2015). Three (or four) factors, four (or three) models. In S. P. Reise & D. Revicki (Eds.), Handbook of item response theory modeling: Applications to typical performance assessment (pp. 159-182). New York, NY: Routledge.

Edwards, M.C. (2013). Purple unicorns, true models, and other things I've never seen. Measurement: Interdisciplinary Research and Perspectives, 11, 107-111.

Houts, C.R., & Edwards, M.C. (2013). The performance of local depdendence measures with psychological data. Applied Psychological Measurement, 37, 541-562.

Edwards, M.C., & MacCallum, R.C. (2012). Current issues in the theory and application of latent variable models. New York, NY: Guilford Press.

Edwards, M.C., & Wirth, R.J. (2012). Valid measurement without factorial invariance: A longitudinal example. In J.R. Harring & G.R. Hancock (Eds.), Advances in longitudinal methods in the social and behavioral sciences (pp.289-311). Thousand Oaks, CA: Sage.

Edwards, M.C., Flora, D.B., & Thissen, D. (2012). Multi-stage computerized adpative testing with uniform item exposure. Applied Measurement in Education, 25, 118-141.

MacCallum, R.C., Edwards, M.C., & Cai, L. (2012). Hopes and cautions in implementing Bayesian structural equation modeling. Psychological Methods, 17, 340-345.

Lecavalier, L., Gadow, K.D., DeVincent, C.J., Houts, C.R., & Edwards, M.C. (2011). Validity of DSM-IV syndromes in preschoolers with Autism Spectrum Disorders. Autism, 15, 527-543.

Edwards, M.C. (2010). A Markov chain Monte Carlo approach to confirmatory item factor analysis. Psychometrika, 75, 474-497.

Edwards, M.C., Cheavens, J.S., Heiy, J.E., & Cukrowicz, K.C. (2010). A reexamination of the factor structure of the Center for Epidemiologic Studies Depression Scale: Is a one-factor model plausible? Psychological Assessment, 22, 711-715.

Edwards, M.C. (2009). An introduction to item response thoery using the Need for Cognition Scale. Social and Personality Psychology Compass, 3, 507-529. (For supplemental files click here.)

Edwards, M.C., & Edelen, M.O. (2009). Special topics in item response theory. In R. Millsap and A. Maydeu-Olivares (Eds.) Handbook of quantitative methods in psychology (p.178-198). New York, NY: Sage.

Edwards, M.C., & Wirth, R.J. (2009). Measurement and the study of change. Research in Human Development, 6, 74-96 .

Lecavalier, L., Gadow, K.D., DeVincent, C.J., Houts, R., & Edwards, M.C. (2009). Deconstructing the PDD clincial phenotype: Internal validity of the DSM-IV. Journal of Child Psychology and Psychiatry, 50, 1246-1254.

Hill, C.D., Edwards, M.C., Thissen, D., Langer, M.M., Wirth, R.J., Burwinkle, T.M., & Varni, J.W. (2007). Practical issues in the application of item response theory: A demonstration using the Pediatric Quality of Life Inventory (PedsQL) 4.0 Generic Core Scales. Medical Care, 45, S39-S47.

Wirth, R.J., & Edwards, M.C. (2007). Item factor analysis: Current approaches and future directions. Psychological Methods, 12, 58-79.

Edwards, M.C., & Vevea, J.L. (2006). An empirical Bayes approach to subscore augmentation: How much strength can we borrow? Journal of Educational and Behavioral Statistics, 31, 241-259.

Selected Papers and Presentations

A new procedure for detecting departures from local independence in item response models - A talk given at the 2011 APA meeting in Washington, DC.

Potential applications for multidimensional item response models - A talk given at the 2009 APS meeting in San Francisco.

At the crossroads of psychometrics and ethics - A talk given at the 2008 APA meeting in Boston.

Item factor analysis: Where we've been and where we might be going - A "State of the Art" talk given at the 2008 International Meeting of the Psychometric Society.

The current state of quantitative psychology - An invited talk given at the Inaugural Fordham Conference on Applied Psychometrics (FCAP) in June 2008.

Multi-Stage Computerized Adaptive Testing with Uniform Item Exposure - Handouts from a talk given at the 2007 GMAC Conference on Computerized Adaptive Testing.

A Markov Chain Monte Carlo Approach to Confirmatory Item Factor Analysis - An invited talk given at the 2006 meeting of the Psychometric Society as the 2006 recipient of the Dissertation Award.

Finding and Defining Quantitative Psychology - A talk given at the 2005 meeting of APA as part of a symposium organized by Roger Millsap titled "Encouraging Students to Pursue Careers in Quantitative Psychology". For more information on Quantitative Psychology, see: