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sirt

Supplementary Item Response Theory Models

If you use sirt and have suggestions for improvement or have found bugs, please email me at robitzsch@ipn.uni-kiel.de.

CRAN version

The official version of sirt is hosted on CRAN and may be found here. The CRAN version can be installed from within R using:

utils::install.packages("sirt")

GitHub version

The version hosted here is the development version of sirt. The GitHub version can be installed using devtools as:

devtools::install_github("alexanderrobitzsch/sirt")

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Version

Install

install.packages('sirt')

Monthly Downloads

2,637

Version

3.0-32

License

GPL (>= 2)

Issues

Pull Requests

Stars

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Repository

https://github.com/alexanderrobitzsch/sirt

Homepage

https://sites.google.com/site/alexanderrobitzsch2/software

Maintainer

Alexander Robitzsch

Last Published

November 22nd, 2018

Functions in sirt (3.0-32)

Dataset Big 5 from qgraph Package

Categorize and Decategorize Variables in a Data Frame

Datasets for NOHARM Analysis

Multilevel Datasets

data.pirlsmissing

Dataset from PIRLS Study with Missing Responses

data.pars1.rasch

Item Parameters for Three Studies Obtained by 1PL and 2PL Estimation

Datasets from Borg and Staufenbiel (2007)

dif.strata.variance

Stratified DIF Variance

Exploratory DETECT Analysis

class.accuracy.rasch

Classification Accuracy in the Rasch Model

Nonparametric Estimation of Conditional Covariances of Item Pairs

Datasets for Local Structural Equation Models / Moderated Factor Analysis

Dataset Mathematics

Confirmatory DETECT and polyDETECT Analysis

BEFKI Dataset (Schroeders, Schipolowski, & Wilhelm, 2015)

automatic.recode

Automatic Method of Finding Keys in a Dataset with Raw Item Responses

data.activity.itempars

Item Parameters Cultural Activities

Some Datasets from McDonald's Test Theory Book

Examples with Datasets from Eid and Schmidt (2014)

Dataset European Social Survey 2005

C-Test Datasets

Rating Datasets

Dataset for Invariance Testing with 4 Groups

data.liking.science

Dataset 'Liking For Science'

Functional Unidimensional Item Response Model

Dataset with Raw Item Responses

Dataset PISA Mathematics

data.timss07.G8.RUS

TIMSS 2007 Grade 8 Mathematics and Science Russia

Item Parameters from Two PISA Studies

Dataset with Mixed Dichotomous and Polytomous Item Responses

Converting a Data Frame from Wide Format in a Long Format

Longitudinal Dataset

Dataset PISA Reading

Equating in the Generalized Logistic Rasch Model

Grade of Membership Model (Joint Maximum Likelihood Estimation)

greenyang.reliability

Reliability for Dichotomous Item Response Data Using the Method of Green and Yang (2009)

Datasets from Reckase' Book Multidimensional Item Response Theory

Dataset Reading

Calculation of the DETECT and polyDETECT Index

linking.haberman

Linking in the 2PL/Generalized Partial Credit Model

Datasets for Pairwise Comparisons

Some Example Datasets for the sirt Package

Maximum Likelihood Estimation of the Dirichlet Distribution

dirichlet.simul

Simulation of a Dirichlet Distributed Vectors

equating.rasch.jackknife

Jackknife Equating Error in Generalized Logistic Rasch Model

dif.logistic.regression

Differential Item Functioning using Logistic Regression Analysis

Estimation of a Discrete Distribution for Fuzzy Data (Data in Belief Function Framework)

Dataset TIMSS Mathematics

Latent Class Model for Two Exchangeable Raters and One Item

Fitting the ISOP and ADISOP Model for Frequency Tables

Robust Linking of Item Intercepts

likelihood.adjustment

Adjustment and Approximation of Individual Likelihood Functions

eigenvalues.manymatrices

Computation of Eigenvalues of Many Symmetric Matrices

Discrete (Rasch) Grade of Membership Model

invariance.alignment

Alignment Procedure for Linking under Approximate Invariance

eigenvalues.sirt

First Eigenvalues of a Symmetric Matrix

Least Squares Distance Method of Cognitive Validation

Maximum Likelihood Estimation of Person or Group Parameters in the Generalized Partial Credit Model

Assessing Model Fit and Local Dependence by Comparing Observed and Expected Item Pair Correlations

Local Structural Equation Models (LSEM)

mirt.specify.partable

Specify or modify a Parameter Table in mirt

Clustering for Continuous Fuzzy Data

latent.regression.em.raschtype

Latent Regression Model for the Generalized Logistic Item Response Model and the Linear Model for Normal Responses

person.parameter.rasch.copula

Person Parameter Estimation of the Rasch Copula Model (Braeken, 2011)

Random Item Response Model / Multilevel IRT Model

Scoring Persons and Items in the ISOP Model

Some Methods for Objects of Class mcmc.list

Computation of the Rhat Statistic from a Single MCMC Chain

Testing the ISOP Model

MCMC Estimation of the Hierarchical IRT Model for Criterion-Referenced Measurement

Some Functions for Wrapping with the mirt Package

Person Fit Statistics for the Rasch Model

Converting a lavaan Model into a mirt Model

parmsummary_extend

Includes Confidence Interval in Parameter Summary Table

matrixfunctions.sirt

Some Matrix Functions

lsem.permutationTest

Permutation Test for a Local Structural Equation Model

Fit Unidimensional ISOP and ADISOP Model to Dichotomous and Polytomous Item Responses

NOHARM Model in R

Cumulative Function for the Bivariate Normal Distribution

MCMC Estimation of the Two-Parameter Normal Ogive Item Response Model

prmse.subscores.scales

Proportional Reduction of Mean Squared Error (PRMSE) for Subscale Scores

Write Coda File from an Object of Class mcmc.list

marginal.truescore.reliability

True-Score Reliability for Dichotomous Data

md.pattern.sirt

Response Pattern in a Binary Matrix

Probabilistic Guttman Model

mcmc.3pno.testlet

3PNO Testlet Model

Calculation of Quasi Monte Carlo Integration Points

mcmc.list.descriptives

Computation of Descriptive Statistics for a mcmc.list Object

Nonparametric Estimation of Item Response Functions

Multidimensional IRT Copula Model

monoreg.rowwise

Monotone Regression for Rows or Columns in a Matrix

Calculation of Probabilities and Moments for the Generalized Logistic Item Response Model

plausible.value.imputation.raschtype

Plausible Value Imputation in Generalized Logistic Item Response Model

nedelsky-methods

Functions for the Nedelsky Model

Estimation of the Partial Credit Model using the Eigenvector Method

Joint Maximum Likelihood (JML) Estimation of the Rasch Model

Pairwise Marginal Likelihood Estimation for the Probit Rasch Model

Plot Function for Objects of Class mcmc.sirt

Plot Method for Object of Class np.dich

PROX Estimation Method for the Rasch Model

Conversion of the Parameterization of the Partial Credit Model

rasch.jml.biascorr

Bias Correction of Item Parameters for Joint Maximum Likelihood Estimation in the Rasch model

rasch.jml.jackknife1

Jackknifing the IRT Model Estimated by Joint Maximum Likelihood (JML)

Item and Person Fit Statistics for the Partial Credit Model

Multidimensional Latent Class 1PL and 2PL Model

Estimation of the Generalized Logistic Item Response Model, Ramsay's Quotient Model, Nonparametric Item Response Model, Pseudo-Likelihood Estimation and a Missing Data Item Response Model

Simulate from Generalized Logistic Item Response Model

Defunct sirt Functions

Simulate from Ramsay's Quotient Model

Simulation of the Rasch Model with Locally Dependent Responses

testlet.marginalized

Marginal Item Parameters from a Testlet (Bifactor) Model

Tetrachoric Correlation Matrix

Polychoric Correlation

Estimation of the Rasch Model with Variational Approximation

prior_model_parse

Parsing a Prior Model

Multidimensional Noncompensatory, Compensatory and Partially Compensatory Item Response Model

reliability.nonlinearSEM

Estimation of Reliability for Confirmatory Factor Analyses Based on Dichotomous Data

stratified.cronbach.alpha

Stratified Cronbach's Alpha

Inverse Gamma Distribution in Prior Sample Size Parameterization

User Defined Item Response Model

Pairwise Estimation Method of the Rasch Model

xxirt_createParTable

Create Item Response Functions and Item Parameter Table

Rater Facets Models with Item/Rater Intercepts and Slopes

Utility Functions in sirt

summary.mcmc.sirt

Summary Method for Objects of Class mcmc.sirt

rasch.pairwise.itemcluster

Pairwise Estimation of the Rasch Model for Locally Dependent Items

Weighted Likelihood Estimation of Person Abilities

wle.rasch.jackknife

Standard Error Estimation of WLE by Jackknifing

Converting a fitted TAM Object into a mirt Object

Hierarchical Rater Model Based on Signal Detection Theory (HRM-SDT)

Statistical Implicative Analysis (SIA)

Conversion of Trait Scores \(\theta\) into True Scores \(\tau ( \theta )\)

unidim.test.csn

Test for Unidimensionality of CSN

xxirt_createThetaDistribution

Creates a User Defined Theta Distribution

\(Q_3\) Statistic of Yen (1984) for Testlets

Estimation of the \(Q_3\) Statistic (Yen, 1984)

R2noharm.jackknife

Jackknife Estimation of NOHARM Analysis

EAP Factor Score Estimation

Functions for the Beta Item Response Model

Running ConQuest From Within R

Extended Bradley-Terry Model

Person Parameter Estimation

Estimation of a NOHARM Analysis from within R