Journal
PSYCHOMETRIKA
Volume 75, Issue 3, Pages 474-497Publisher
SPRINGER
DOI: 10.1007/s11336-010-9161-9
Keywords
item factor analysis; multidimensional item response theory; Markov chain Monte Carlo
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Item factor analysis has a rich tradition in both the structural equation modeling and item response theory frameworks. The goal of this paper is to demonstrate a novel combination of various Markov chain Monte Carlo (MCMC) estimation routines to estimate parameters of a wide variety of confirmatory item factor analysis models. Further, I show that these methods can be implemented in a flexible way which requires minimal technical sophistication on the part of the end user. After providing an overview of item factor analysis and MCMC, results from several examples (simulated and real) will be discussed. The bulk of these examples focus on models that are problematic for current gold-standard estimators. The results demonstrate that it is possible to obtain accurate parameter estimates using MCMC in a relatively user-friendly package.
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