Package: psychomix 1.1-9

Achim Zeileis

psychomix: Psychometric Mixture Models

Psychometric mixture models based on 'flexmix' infrastructure. At the moment Rasch mixture models with different parameterizations of the score distribution (saturated vs. mean/variance specification), Bradley-Terry mixture models, and MPT mixture models are implemented. These mixture models can be estimated with or without concomitant variables. See Frick et al. (2012) <doi:10.18637/jss.v048.i07> and Frick et al. (2015) <doi:10.1177/0013164414536183> for details on the Rasch mixture models.

Authors:Hannah Frick [aut], Friedrich Leisch [aut], Carolin Strobl [aut], Florian Wickelmaier [aut], Achim Zeileis [aut, cre]

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psychomix.pdf |psychomix.html
psychomix/json (API)
NEWS

# Install 'psychomix' in R:
install.packages('psychomix', repos = 'https://cloud.r-project.org')

On CRAN:

Conda:

This package does not link to any Github/Gitlab/R-forge repository. No issue tracker or development information is available.

2.30 score 467 downloads 23 exports 6 dependencies

Last updated 7 months agofrom:e2a0e8947e. Checks:3 OK. Indexed: no.

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Doc / VignettesOKMar 10 2025
R-4.5-linuxOKMar 10 2025
R-4.4-linuxOKMar 10 2025

Exports:allEffects.btmixallEffects.mptmixallEffects.raschmixbtmixeffect.btmixeffect.mptmixeffect.raschmixeffectsploteffectsplot.efflisteffectsplot.effpolyFLXMCbtregFLXMCmptFLXMCraschitemparmptmixparametersplotraschmixscoreProbsshowsimRaschmixsummaryworth

Dependencies:flexmixFormulalatticemodeltoolsnnetpsychotools

Flexible Rasch Mixture Models with Package psychomix

Rendered fromraschmix.Rnwusingutils::Sweaveon Mar 10 2025.

Last update: 2020-01-30
Started: 2012-03-02

Rasch Mixture Models for DIF Detection: A Comparison of Old and New Score Specifications

Rendered fromscores.Rnwusingutils::Sweaveon Mar 10 2025.

Last update: 2019-05-07
Started: 2012-10-10

Citation

To cite psychomix in publications please use:

Frick H, Strobl C, Leisch F, Zeileis A (2012). “Flexible Rasch Mixture Models with Package psychomix.” Journal of Statistical Software, 48(7), 1–25. doi:10.18637/jss.v048.i07.

If you use Rasch mixture models with a restricted score distribution, please additionally cite:

Frick H, Strobl C, Zeileis A (2015). “Rasch Mixture Models for DIF Detection: A Comparison of Old and New Score Specifications.” Educational and Psychological Measurement, 75(2), 208–234. doi:10.1177/0013164414536183.

Corresponding BibTeX entries:

  @Article{,
    title = {Flexible Rasch Mixture Models with Package {psychomix}},
    author = {Hannah Frick and Carolin Strobl and Friedrich Leisch and
      Achim Zeileis},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {48},
    number = {7},
    pages = {1--25},
    doi = {10.18637/jss.v048.i07},
  }
  @Article{,
    title = {{R}asch Mixture Models for {DIF} Detection: A Comparison
      of Old and New Score Specifications},
    author = {Hannah Frick and Carolin Strobl and Achim Zeileis},
    journal = {Educational and Psychological Measurement},
    year = {2015},
    volume = {75},
    number = {2},
    pages = {208--234},
    doi = {10.1177/0013164414536183},
  }

Readme and manuals

Help Manual

Help pageTopics
Finite Mixtures of Bradley-Terry Modelsbtmix FLXMCbtreg
Class "btmix"btmix-class
Methods for btmix Objectsworth,btmix-method
Effects Displays for Concomitant Variables in Finite Mixture ModelsallEffects.btmix allEffects.mptmix allEffects.raschmix effect.btmix effect.mptmix effect.raschmix effectsplot effectsplot,btmix-method effectsplot,mptmix-method effectsplot,raschmix-method effectsplot.efflist effectsplot.effpoly
Finite Mixtures of Multinomial Processing Tree ModelsFLXMCmpt mptmix
Class "mptmix"mptmix-class
Finite Mixtures of Rasch ModelsFLXMCrasch raschmix
Class "raschmix"raschmix-class
Methods for raschmix Objectsitempar,raschmix-method parameters,raschmix-method scoreProbs show,raschmix-method show,summary.raschmix-method summary,raschmix-method worth,raschmix-method
Profile Plot of Item Parametershistogram.raschmix plot,raschmix,missing-method plot,raschmix-method xyplot.raschmix
Simulate Data from Rasch Mixture ModelssimRaschmix