
ltm
 Referenced in 42 articles
[sw07911]
 package for latent variable modelling and item response theory analyses. The R package ... using latent variable models, under the Item Response Theory approach. For dichotomous data the Rasch...

mirt
 Referenced in 35 articles
[sw13479]
 package mirt: Multidimensional Item Response Theory. Analysis of dichotomous and polytomous response data using unidimensional ... multidimensional latent trait models under the Item Response Theory paradigm. Exploratory and confirmatory models ... tier analyses are available for modeling item testlets. Multiple group analysis and mixed effects designs...

psych
 Referenced in 44 articles
[sw04549]
 although others provide basic descriptive statistics. Item Response Theory is done using factor analysis ... polychoric correlations. Functions for simulating particular item and test structures are included. Several functions serve...

WINSTEPS
 Referenced in 27 articles
[sw06661]
 Rasch scaling is often classified under item response theory, IRT, or logitlinear models. Rasch ... specifies how persons, probes, prompts, raters, test items, tasks, etc. must interact statistically through probabilistic...

pscl
 Referenced in 25 articles
[sw07110]
 Laboratory, Stanford University. Bayesian analysis of itemresponse theory (IRT) models, roll call analysis; computing...

MultiLCIRT
 Referenced in 14 articles
[sw11284]
 package MultiLCIRT: Multidimensional Latent Class Item Response Theory Models. Framework for the Item Response Theory ... fitting algorithms allow for missing responses and for different item parameterizations and are based...

MULTILOG
 Referenced in 16 articles
[sw24168]
 item analysis and test scoring using item response theory...

flexMIRT
 Referenced in 9 articles
[sw13413]
 multilevel, multidimensional, and multiple group item response theory (IRT) software package for item analysis ... variety of unidimensional and multidimensional item response theory models (also known as item factor analysis...

LordWingersky
 Referenced in 13 articles
[sw41250]
 Wingersky algorithm Version 2.5 with applications. Item response theory scoring based on summed scores ... case of twotier multidimensional item factor models and called it Lord–Wingersky algorithm Version ... reporting, and (c) detection of aberrant responses...

lordif
 Referenced in 8 articles
[sw23411]
 hybrid of ordinal logistic regression and item response theory...

IRTLRDIF
 Referenced in 7 articles
[sw11676]
 Computation of the Statistics Involved in Item Response Theory LikelihoodRatio Tests for Differential Item...

BMIRT ToolKit
 Referenced in 5 articles
[sw13942]
 BMIRTII(Yao, 2003, 2010), Bayesian Multivariate item Response Theory, is a computer program that uses ... Carlo (MCMC) MetropolicsHastings method to produce item and ability parameter estimates and model ... multidimensional, multigroup item response theory model frame work; exploratory and confirmatory mode are supported...

plink
 Referenced in 7 articles
[sw23674]
 plink: IRT Separate Calibration Linking Methods. Item response theory based methods are used to compute ... tests for multiple groups under a common item design. The unidimensional methods include the Mean/Mean ... and/or polytomous (graded response, partial credit/generalized partial credit, nominal, and multiplechoice model) items...

sirt
 Referenced in 6 articles
[sw15945]
 package sirt. Supplementary item response theory models to complement existing functions in R, including multidimensional...

mlirt
 Referenced in 6 articles
[sw24922]
 handle measurement error using an item response theory (IRT) model, leading to a multilevel...

KernSmoothIRT
 Referenced in 4 articles
[sw16977]
 package KernSmoothIRT: Nonparametric Item Response Theory. This package fits nonparametric item and option characteristic curves...

IRTmu2no
 Referenced in 4 articles
[sw25350]
 MultiUnidimensional IRT Model. Unidimensional item response theory (IRT) models are useful when each item ... unified latent trait. In practical applications, items are not necessarily measuring the same underlying trait ... Gibbs sampler for such models with two item parameters and a normal ogive form ... user the choice to simulate binary response data with multiple dimensions, set the number...

equateIRT
 Referenced in 4 articles
[sw20026]
 Equating. The R package equateIRT implements item response theory (IRT) methods for equating different forms...

AnaQol
 Referenced in 4 articles
[sw11075]
 AnaQol to estimate the parameters of item responses theory models. %Anaqol requires the %Gammasym ... cumulative traces of dichotomous and polytomous items; ;drawing logistic traces of dichotomous items; estimating...

edstan
 Referenced in 2 articles
[sw36573]
 package edstan: Stan Models for Item Response Theory. Provides convenience functions and preprogrammed Stan ... models related to item response theory. Its purpose is to make fitting common item response...