The irtQ R package: a user-friendly tool for item response theorybased test data analysis and calibration.

ABSTRACT: Computerized adaptive testing (CAT) has become a widely adopted test design for high-stakes licensing and certification exams, particularly in the health professions in the United States, due to its ability to tailor test difficulty in real time, reducing testing time while providing precise ability estimates. A key component of CAT is item response theory (IRT), which facilitates the dynamic selection of items based on examinees' ability levels during a test. Accurate estimation of item and ability parameters is essential for successful CAT implementation, necessitating convenient and reliable software to ensure precise parameter estimation. This paper introduces the irtQ R package (http://CRAN.R-project.org/), which simplifies IRTbased analysis and item calibration under unidimensional I

SUBMITTER: Lim H 

PROVIDER: S-EPMC11561393 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature