Person Parameter Estimation
Estimation of the Q_3 Statistic (Yen, 1984)
Q_3 Statistic of Yen (1984) for Testlets
Running ConQuest From Within R
EAP Factor Score Estimation
Estimation of a NOHARM Analysis from within R
Jackknife Estimation of NOHARM Analysis
Automatic Method of Finding Keys in a Dataset with Raw Item Responses
Functions for the Beta Item Response Model
Extended Bradley-Terry Model
Categorize and Decategorize Variables in a Data Frame
Nonparametric Estimation of Conditional Covariances of Item Pairs
Estimation of a Unidimensional Factor Model under Full and Partial Measurement Invariance
Classification Accuracy in the Rasch Model
Confirmatory DETECT and polyDETECT Analysis
Item Parameters Cultural Activities
BEFKI Dataset (Schroeders, Schipolowski, & Wilhelm, 2015)
Dataset Big 5 from 'qgraph' Package
Datasets from Borg and Staufenbiel (2007)
Examples with Datasets from Eid and Schmidt (2014)
Dataset European Social Survey 2005
C-Test Datasets
Dataset for Invariance Testing with 4 Groups
Dataset 'Liking For Science'
Longitudinal Dataset
Datasets for Local Structural Equation Models / Moderated Factor Analysis
Dataset Mathematics
Some Datasets from McDonald's _Test Theory_ Book
Dataset with Mixed Dichotomous and Polytomous Item Responses
Multilevel Datasets
Datasets for NOHARM Analysis
Item Parameters for Three Studies Obtained by 1PL and 2PL Estimation
Dataset from PIRLS Study with Missing Responses
Dataset PISA Mathematics
Item Parameters from Two PISA Studies
Dataset PISA Reading
Datasets for Pairwise Comparisons
Rating Datasets
Dataset with Raw Item Responses
Dataset Reading
Datasets from Reckase' Book _Multidimensional Item Response Theory_
Some Example Datasets for the 'sirt' Package
Dataset TIMSS Mathematics
TIMSS 2007 Grade 8 Mathematics and Science Russia
Dataset Used in Stoyan, Pommerening and Wuensche (2018)
Converting a Data Frame from Wide Format in a Long Format
Calculation of the DETECT and polyDETECT Index
Differential Item Functioning using Logistic Regression Analysis
Stratified DIF Variance
DIF Variance
Maximum Likelihood Estimation of the Dirichlet Distribution
Simulation of a Dirichlet Distributed Vectors
Computation of Eigenvalues of Many Symmetric Matrices
Equating in the Generalized Logistic Rasch Model
Jackknife Equating Error in Generalized Logistic Rasch Model
Exploratory DETECT Analysis
Functional Unidimensional Item Response Model
Fitting the ISOP and ADISOP Model for Frequency Tables
Clustering for Continuous Fuzzy Data
Estimation of a Discrete Distribution for Fuzzy Data (Data in Belief Function Framework)
Discrete (Rasch) Grade of Membership Model
Grade of Membership Model (Joint Maximum Likelihood Estimation)
Reliability for Dichotomous Item Response Data Using the Method of Green and Yang (2009)
Alignment Procedure for Linking under Approximate Invariance
Fit Unidimensional ISOP and ADISOP Model to Dichotomous and Polytomous Item Responses
Scoring Persons and Items in the ISOP Model
Testing the ISOP Model
Latent Regression Model for the Generalized Logistic Item Response Model and the Linear Model for Normal Responses
Converting a 'lavaan' Model into a 'mirt' Model
Latent Class Model for Two Exchangeable Raters and One Item
Adjustment and Approximation of Individual Likelihood Functions
Linking in the 2PL/Generalized Partial Credit Model
Haebara Linking of the 2PL Model for Multiple Studies
Robust Linking of Item Intercepts
Fit of a L_q Regression Model
Least Squares Distance Method of Cognitive Validation
Local Structural Equation Models (LSEM)
Permutation Test for a Local Structural Equation Model
True-Score Reliability for Dichotomous Data
Some Matrix Functions
MCMC Estimation of the Two-Parameter Normal Ogive Item Response Model
Random Item Response Model / Multilevel IRT Model
MCMC Estimation of the Hierarchical IRT Model for Criterion-Referenced Measurement
3PNO Testlet Model
Computation of Descriptive Statistics for a 'mcmc.list' Object
Computation of the Rhat Statistic from a Single MCMC Chain
Some Methods for Objects of Class 'mcmc.list'
Write Coda File from an Object of Class 'mcmc.list'
Response Pattern in a Binary Matrix
Specify or modify a Parameter Table in 'mirt'
Some Functions for Wrapping with the 'mirt' Package
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
Monotone Regression for Rows or Columns in a Matrix
Functions for the Nedelsky Model
NOHARM Model in R
Nonparametric Estimation of Item Response Functions
Includes Confidence Interval in Parameter Summary Table
Cumulative Function for the Bivariate Normal Distribution
Conversion of the Parameterization of the Partial Credit Model
Item and Person Fit Statistics for the Partial Credit Model
Person Parameter Estimation of the Rasch Copula Model (Braeken, 2011)
Person Fit Statistics for the Rasch Model
Calculation of Probabilities and Moments for the Generalized Logistic Item Response Model
Plausible Value Imputation in Generalized Logistic Item Response Model
Plot Function for Objects of Class 'mcmc.sirt'
Plot Method for Object of Class 'np.dich'
Polychoric Correlation
Parsing a Prior Model
Proportional Reduction of Mean Squared Error (PRMSE) for Subscale Scores
Probabilistic Guttman Model
Calculation of Quasi Monte Carlo Integration Points
Multidimensional IRT Copula Model
Estimation of the Partial Credit Model using the Eigenvector Method
Joint Maximum Likelihood (JML) Estimation of the Rasch Model
Bias Correction of Item Parameters for Joint Maximum Likelihood Estimation in the Rasch model
Jackknifing the IRT Model Estimated by Joint Maximum Likelihood (JML)
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
Pairwise Estimation Method of the Rasch Model
Pairwise Estimation of the Rasch Model for Locally Dependent Items
Pairwise Marginal Likelihood Estimation for the Probit Rasch Model
PROX Estimation Method for the Rasch Model
Estimation of the Rasch Model with Variational Approximation
Estimation of Reliability for Confirmatory Factor Analyses Based on Dichotomous Data
Creates Group-Wise Item Response Dataset
Inverse Gamma Distribution in Prior Sample Size Parameterization
Rater Facets Models with Item/Rater Intercepts and Slopes
Hierarchical Rater Model Based on Signal Detection Theory (HRM-SDT)
Simulation of a Multivariate Normal Distribution with Exact Moments
Scaling of Group Means and Standard Deviations
Statistical Implicative Analysis (SIA)
Simulate from Ramsay's Quotient Model
Simulation of the Rasch Model with Locally Dependent Responses
Simulate from Generalized Logistic Item Response Model
Defunct 'sirt' Functions
Supplementary Item Response Theory Models
Utility Functions in 'sirt'
First Eigenvalues of a Symmetric Matrix
Multidimensional Noncompensatory, Compensatory and Partially Compensatory Item Response Model
Stratified Cronbach's Alpha
Summary Method for Objects of Class 'mcmc.sirt'
Converting a fitted 'TAM' Object into a 'mirt' Object
Marginal Item Parameters from a Testlet (Bifactor) Model
Tetrachoric Correlation Matrix
Conversion of Trait Scores theta into True Scores tau ( theta )
Test for Unidimensionality of CSN
Weighted Likelihood Estimation of Person Abilities
Standard Error Estimation of WLE by Jackknifing
User Defined Item Response Model
Create Item Response Functions and Item Parameter Table
Creates a User Defined Theta Distribution