• ltm

  • Referenced in 32 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...
  • WINSTEPS

  • Referenced in 23 articles [sw06661]
  • Rasch scaling is often classified under item response theory, IRT, or logit-linear models. Rasch ... specifies how persons, probes, prompts, raters, test items, tasks, etc. must interact statistically through probabilistic...
  • mirt

  • Referenced in 15 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 20 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...
  • pscl

  • Referenced in 17 articles [sw07110]
  • Laboratory, Stanford University. Bayesian analysis of item-response theory (IRT) models, roll call analysis; computing...
  • MULTILOG

  • Referenced in 14 articles [sw24168]
  • item analysis and test scoring using item response theory...
  • MultiLCIRT

  • Referenced in 9 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...
  • flexMIRT

  • Referenced in 5 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...
  • BMIRT ToolKit

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

  • Referenced in 6 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 multiple-choice model) items...
  • IRTLRDIF

  • Referenced in 5 articles [sw11676]
  • Computation of the Statistics Involved in Item Response Theory Likelihood-Ratio Tests for Differential Item...
  • IRTmu2no

  • Referenced in 4 articles [sw25350]
  • Multi-Unidimensional 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...
  • lordif

  • Referenced in 4 articles [sw23411]
  • hybrid of ordinal logistic regression and item response theory...
  • sirt

  • Referenced in 4 articles [sw15945]
  • package sirt. Supplementary item response theory models to complement existing functions in R, including multidimensional...
  • mlirt

  • Referenced in 4 articles [sw24922]
  • handle measurement error using an item response theory (IRT) model, leading to a multilevel...
  • KernSmoothIRT

  • Referenced in 3 articles [sw16977]
  • package KernSmoothIRT: Nonparametric Item Response Theory. This package fits nonparametric item and option characteristic curves...
  • equateIRT

  • Referenced in 3 articles [sw20026]
  • Equating. The R package equateIRT implements item response theory (IRT) methods for equating different forms...
  • AnaQol

  • Referenced in 3 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...
  • IRTFIT

  • Referenced in 2 articles [sw11074]
  • indices for testing the fit of item response theory (IRT) models to dichotomous and polytomous...
  • catsim

  • Referenced in 1 article [sw20813]
  • Assisted by the mathematical models of Item Response Theory, items and examinees can be represented ... tests and the logistical models of Item Response Theory. catsim provides functions for generating item...