sirt: Supplementary Item Response Theory Models

Supplementary functions for item response models aiming to complement existing R packages. The functionality includes among others multidimensional compensatory and noncompensatory IRT models (Reckase, 2009, <doi:10.1007/978-0-387-89976-3>), MCMC for hierarchical IRT models and testlet models (Fox, 2010, <doi:10.1007/978-1-4419-0742-4>), NOHARM (McDonald, 1982, <doi:10.1177/014662168200600402>), Rasch copula model (Braeken, 2011, <doi:10.1007/s11336-010-9190-4>; Schroeders, Robitzsch & Schipolowski, 2014, <doi:10.1111/jedm.12054>), faceted and hierarchical rater models (DeCarlo, Kim & Johnson, 2011, <doi:10.1111/j.1745-3984.2011.00143.x>), ordinal IRT model (ISOP; Scheiblechner, 1995, <doi:10.1007/BF02301417>), DETECT statistic (Stout, Habing, Douglas & Kim, 1996, <doi:10.1177/014662169602000403>), local structural equation modeling (LSEM; Hildebrandt, Luedtke, Robitzsch, Sommer & Wilhelm, 2016, <doi:10.1080/00273171.2016.1142856>).

Version: 4.1-15
Depends: R (≥ 3.5)
Imports: CDM, graphics, methods, parallel, pbapply, Rcpp, stats, TAM, utils
LinkingTo: pbv, Rcpp, RcppArmadillo
Suggests: coda, igraph, lavaan, MASS, Matrix, miceadds, minqa, mirt, mvtnorm, nloptr, optimx, pbivnorm, pbv, psych, sfsmisc, sm, survey
Published: 2024-02-06
DOI: 10.32614/CRAN.package.sirt
Author: Alexander Robitzsch [aut,cre] (<>)
Maintainer: Alexander Robitzsch <robitzsch at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: yes
Citation: sirt citation info
Materials: README NEWS
In views: Psychometrics
CRAN checks: sirt results


Reference manual: sirt.pdf


Package source: sirt_4.1-15.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): sirt_4.1-15.tgz, r-oldrel (arm64): sirt_4.1-15.tgz, r-release (x86_64): sirt_4.1-15.tgz, r-oldrel (x86_64): sirt_4.1-15.tgz
Old sources: sirt archive

Reverse dependencies:

Reverse depends: subscore
Reverse imports: cdmTools, cypress, discnorm, GRShiny, immer, LAM, mdmb, MLEce, STARTS
Reverse suggests: dextergui, FAfA, LSAmitR, miceadds, mirt, shortIRT
Reverse enhances: mnlfa


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