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mirt
Multidimensional Item Response Theory
View on CRAN: Click
here
Download and install mirt package within the R console
Install from CRAN:
install.packages("mirt")
Install from Github:
library("remotes")
install_github("cran/mirt") Install by package version:
library("remotes")
install_version("mirt", "1.47") Attach the package and use:
library("mirt")
Maintained by
Phil Chalmers
[Scholar Profile | Author Map]
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2011-07-02
Latest Update: 2025-01-28
Description:
Analysis of discrete response data using
unidimensional and multidimensional item analysis models under the Item
Response Theory paradigm (Chalmers (2012) ).
Exploratory and confirmatory item factor analysis models
are estimated with quadrature (EM) or stochastic (MHRM) methods. Confirmatory
bi-factor and two-tier models are available for modeling item testlets using
dimension reduction EM algorithms, while multiple group analyses and
mixed effects designs are included for detecting differential item, bundle,
and test functioning, and for modeling item and person covariates.
Finally, latent class models such as the DINA, DINO, multidimensional latent class,
mixture, and zero-inflated response models are supported.
How to cite:
Phil Chalmers (2011). mirt: Multidimensional Item Response Theory. R package version 1.47, https://cran.r-project.org/web/packages/mirt. Accessed 26 Oct. 2026.
Previous versions and publish date:
(2026-10-06 10:00), 0.1-13 (2011-07-02 19:11), 0.1-14 (2011-07-23 15:57), 0.1-15 (2011-08-08 19:47), 0.1-16 (2011-09-15 07:57), 0.1-17 (2011-10-12 09:56), 0.1-18 (2011-10-14 08:42), 0.1-19 (2011-11-24 10:13), 0.1-20 (2012-02-04 09:39), 0.2.0 (2012-02-15 09:30), 0.2.1 (2012-04-06 06:42), 0.2.3 (2012-05-02 08:10), 0.2.4 (2012-05-10 00:44), 0.2.5 (2012-06-07 08:05), 0.2.6 (2012-07-15 19:12), 0.3.0 (2012-08-23 08:05), 0.4.0 (2012-09-22 20:13), 0.4.1 (2012-10-23 18:45), 0.4.2 (2012-11-25 09:09), 0.5.0 (2013-01-17 22:21), 0.6.0 (2013-03-19 07:15), 0.7.0 (2013-04-21 07:42), 0.8.0 (2013-07-02 11:19), 0.9.0 (2013-08-31 06:06), 1.0 (2013-11-01 17:35), 1.1 (2013-12-20 08:03), 1.2.1 (2014-02-21 08:11), 1.2 (2014-02-20 21:24), 1.3 (2014-04-23 19:54), 1.4 (2014-06-22 23:46), 1.5 (2014-08-14 18:56), 1.6.1 (2014-10-10 21:56), 1.7 (2014-12-15 15:24), 1.8 (2015-01-22 22:34), 1.9 (2015-03-29 08:43), 1.10 (2015-06-16 00:34), 1.13 (2015-09-10 00:31), 1.14 (2015-11-19 23:35), 1.15 (2016-01-21 17:03), 1.16 (2016-03-07 07:59), 1.17.1 (2016-04-27 19:00), 1.17 (2016-04-27 13:31), 1.18 (2016-06-24 09:53), 1.19 (2016-08-18 23:27), 1.20.1 (2016-10-05 16:36), 1.21 (2016-12-01 08:28), 1.22 (2017-02-01 01:03), 1.23 (2017-03-02 23:54), 1.24 (2017-05-04 09:53), 1.25 (2017-07-23 19:33), 1.26.1 (2017-11-27 09:52), 1.26.3 (2017-11-30 00:53), 1.27.1 (2018-03-16 18:09), 1.28 (2018-05-20 05:37), 1.29 (2018-08-12 06:40), 1.30 (2019-01-29 10:10), 1.31 (2019-09-15 02:10), 1.32.1 (2020-04-25 16:50), 1.32 (2020-04-24 07:20), 1.33.2 (2020-10-31 21:10), 1.34 (2021-06-28 23:10), 1.35.1 (2021-12-09 00:10), 1.36.1 (2022-03-22 10:00), 1.36 (2022-03-21 16:20), 1.37.1 (2022-08-10 17:30), 1.38.1 (2023-02-28 04:52), 1.39 (2023-05-30 06:30), 1.40 (2023-08-10 17:40), 1.41 (2023-10-17 17:50), 1.42 (2024-07-14 06:30), 1.43 (2024-11-14 09:50), 1.44.0 (2025-01-28 22:50), 1.45.1 (2025-09-06 07:11), 1.46.1 (2026-03-07 07:10), 1.47 (2026-08-20 11:10)
Other packages that cited mirt R package
View mirt citation profile
Other R packages that mirt depends,
imports, suggests or enhances
Complete documentation for mirt
Functions, R codes and Examples using
the mirt R package
Some associated functions: Bock1997 . DIF . DRF . DTF . DiscreteClass-class . LSAT6 . LSAT7 . M2 . MDIFF . MDISC . MixedClass-class . MixtureClass-class . MultipleGroupClass-class . PLCI.mirt . RCI . RMSD_DIF . SAT12 . SIBTEST . SLF . Science . SingleGroupClass-class . anova-method . areainfo . averageMI . bfactor . boot.LR . boot.mirt . coef-method . createGroup . createItem . deAyala . draw_parameters . empirical_ES . empirical_plot . empirical_rxx . estfun.AllModelClass . expand.table . expected.item . expected.test . extract.group . extract.item . extract.mirt . fixedCalib . fixef . fscores . gen.difficulty . imputeMissing . itemGAM . itemfit . iteminfo . itemplot . itemstats . key2binary . lagrange . likert2int . logLik-method . marginal_rxx . mdirt . mirt-package . mirt.model . mirt . mirtCluster . mixedmirt . mod2values . multipleGroup . numerical_deriv . personfit . plot-method . poly2dich . print-method . print.mirt_df . print.mirt_list . print.mirt_matrix . probtrace . randef . read.mirt . remap.distance . residuals-method . show-method . simdata . summary-method . testinfo . thetaComb . traditional2mirt . vcov-method . wald .
Some associated R codes: 00-classes.R . 01-itemclass.R . 02a-general_methods.R . 02b-item_methods.R . 03-estimation.R . 04-PrepData.R . 05-model.elements.R . 06-LoadPars.R . 07-calcLogLik.R . 08-SE.methods.R . DIF.R . DRF.R . DTF.R . Discrete-methods.R . EMstep.group.R . EMstep.utils.R . M2.R . MDIFF.R . MDISC.R . MHRM.group.R . MHRM.utils.R . Mixed-methods.R . Mixture-methods.R . MultipleGroup-methods.R . PLCI.mirt.R . RCI.R . RMSD_DIF.R . SIBTEST.R . SingleGroup-methods.R . areainfo.R . averageMI.R . bfactor.R . boot.LR.R . boot.mirt.R . createGroup.R . createItem.R . empirical_ES.R . empirical_plot.R . empirical_rxx.R . estfun.R . expand.table.R . expected.item.R . expected.test.R . extract.group.R . extract.item.R . extract.mirt.R . fixedCalib.R . fixef.R . fscores.R . fscores.internal.R . gen.difficulty.R . imputeMissing.R . interp_exterp.R . itemGAM.R . itemfit.R . iteminfo.R . itemplot.R . itemplot.internal.R . itemstats.R . key2binary.R . lagrange.R . likert2int.R . marginal_rxx.R . mdirt.R . mirt-package.R . mirt.R . mirt.model.R . mirtCluster.R . mixedmirt.R . mod2values.R . multipleGroup.R . numerical_deriv.R . personfit.R . poly2dich.R . probtrace.R . randef.R . read.mirt.R . remap.distance.R . shinyItemplot.R . simdata.R . testinfo.R . utils.R . wald.R . Full mirt package functions and examples
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