Item Response Modeling / Latent Structure Models

  • CDM  Cognitive Diagnosis Modeling (with T. Kiefer, A. C. George, & A. Ünlü)

    • DINA, DINO and mixed DINA/DINO model (din)
    • GDINA model (de la Torre, 2011; gdina): multiple groups, higher order GDINA, polytomous skills (Chen & de la Torre, 2013)
    • Multiple choice DINA model (de la Torre, 2009; mcdina): multiple groups, group-specific item parameters, polytomous skills
    • General diagnostic model (GDM; von Davier, 2008; gdm) for polytomous item responses with ordered discrete or continuous latent variables and an option for estimating trait locations (Bartolucci, 2007)
    • Structured latent class analysis (SLCA; Formann, 1992, slca): Multidimensional IRT model, Latent class model, Located latent class model, Mixture IRT models, Cognitive diagnostic models, ...
                CRAN version 4.5-0 (2015-08-28)     NEWS   INDEX  crantastic   rdocumentation       github       ianhowson                
                Development version 4.1-27 (2015-02-01)
  zip   tar.gz  pdf

                CRAN version 1.8-9 (2015-06-28)     NEWS   INDEX    crantastic   rdocumentation     github       ianhowson                
Development version 1.7-12 (2015-06-23)  zip   tar.gz  pdf

  • TAM  Test Analysis Modules (with T. Kiefer, & M. Wu)

    • Multidimensional 1PL and 2PL item response models for polytomous data using MML or JML estimation (tam.mmltam.mml.2pl, tam.jml)
    • 1PL and 2PL models with user-specified design matrices, e.g. facet designs  (tam.mml.mfr)
    • 3PL model with design matrix for item slopes and a mix of continuous and discrete latent variables (tam.mml.3pl) which allows latent trait models, latent class models and mixture IRT models
    • Model specification with lavaan-based syntax (tamaan, tamaanify, lavaanify.IRT)
    • Bifactor model and exploratory factor analysis (tam.fa)
    • Plausible value imputation and latent regression models (tam.pv)
    • Q3 statistic and measures of model fit (tam.modelfit)

    • CRAN version 1.13-0 (2015-08-29)       NEWS    INDEX    crantastic   rdocumentation        github       ianhowson           
                   Development version 1.9-9 (2015-07-10)  zip   tar.gz  pdf

Missing Data

                CRAN version 1.3-0 (2015-07-10)     NEWS   INDEX  crantastic   rdocumentation     github    ianhowson
Development version 1.1-5 (2015-03-23)  zip   tar.gz  pdf

  • mitml  Multiple imputation tools for multilevel data (with S. Grund, & O. Lüdtke)
    • Convenient wrapper to the pan package for imputation of multilevel data
    • D1, D2 and D3 statistics for multi-parameter tests for singlelevel and multilevel models with multiply imputed data
                CRAN version 0.2-3 (2015-07-09)     NEWS   INDEX  crantastic   rdocumentation       github       ianhowson    

Survey Statistics

                CRAN version 1.3-0 (2015-07-10)     NEWS   INDEX  crantastic   rdocumentation     github      ianhowson

                Development version 1.2-9 (2015-04-03)  zip   tar.gz  pdf

Some Contributions

IsingFit, mice, mirt, semTools,