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 (Fraser & McDonald, 1982, <doi:10.1207/s15327906mbr2302_9>), 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 et al., 1996, <doi:10.1177/014662169602000403>), local structural equation modeling (LSEM; Hildebrandt et al., 2016, <doi:10.1080/00273171.2016.1142856>).

Version: 2.6-9
Depends: R (≥ 3.1)
Imports: CDM (≥ 6.0), coda, graphics, lavaan, lavaan.survey, MASS, methods, mirt, mvtnorm, Rcpp, sfsmisc, stats, survey, TAM (≥ 2.5-5), utils
LinkingTo: Rcpp, RcppArmadillo
Suggests: gtools, ic.infer (≥ 1.1-6), igraph, Matrix, miceadds, pbivnorm, psych, sm
Published: 2018-03-22
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_2.6-9.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X El Capitan binaries: r-release: sirt_2.6-9.tgz
OS X Mavericks binaries: r-oldrel: sirt_2.3-57.tgz
Old sources: sirt archive

Reverse dependencies:

Reverse imports: immer, LAM, mdmb, miceadds, STARTS
Reverse suggests: CDM, LSAmitR, mirt, TAM


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