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# CITATION.cff file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "GMX" in publications use:'
type: software
license: GPL-3.0-or-later
title: 'GMX: Extended Graphical Model Checks for the Rasch Family of Models'
version: 0.9-3
identifiers:
- type: doi
  value: 10.32614/CRAN.package.GMX
abstract: The function plotLRT() draws pairwise graphical model checks for the Rasch
  Model (RM; Rasch, 1960), the Partial Credit Model (PCM; Masters, 1982), and the
  Rating Scale Model (RSM; Andrich, 1978) using the output object of eRm::LRtest().
  The function cLRT() provides a conditional Likelihood Ratio Test (Andersen, 1973),
  using the routines of 'psychotools' (Zeileis et al., 2026). Users may choose to
  plot the threshold parameters, the cumulative thresholds, the average thresholds
  per item, or the person parameters. Extended coloring options allow for automated
  item-wise or threshold-wise coloring. For multi-group splits, all pairwise group
  comparisons are drawn automatically. The function plotMLT() draws a graphical model
  check for the Martin-Loef-Test (MLT). If type='persons', it draws scatterplots of
  the person parameter estimates of each pair of item sub-groups. If type='items',
  it draws a scatterplot of the item/threshold parameter estimates of each of the
  two sub-groups vertically against the estimates of the total sample horizontally.
authors:
- family-names: Alexandrowicz
  given-names: Rainer W.
  email: rainer.alexandrowicz@aau.at
preferred-citation:
  type: manual
  title: 'GMX: Extended Graphical Model Checks for the Rasch Family of Models'
  authors:
  - family-names: Alexandrowicz
    given-names: Rainer W.
    email: rainer.alexandrowicz@aau.at
  year: '2026'
  notes: R package version 0.9-3
repository: https://cran.r-universe.dev
commit: 8e353ebf9591e0bab4c50ea3a40afe1a54ad5d8a
date-released: '2026-07-20'
contact:
- family-names: Alexandrowicz
  given-names: Rainer W.
  email: rainer.alexandrowicz@aau.at
references:
- type: manual
  title: 'GMX: Extended Graphical Model Checks of RM/PCM/RSM for Multi-Group Splits'
  authors:
  - name: Rainer W. Alexandrowicz
  year: '2023'
  version: '0.9'
  url: https://osf.io/2ryd8/
- type: article
  title: 'GMX: Extended Graphical Model Checks. A Versatile Replacement of the plotGOF()
    Function of eRm'
  authors:
  - name: Rainer W. Alexandrowicz
  journal: Psychological Test and Assessment Modeling
  year: '2022'
  volume: '64'
  issue: '3'
  start: '215'
  end: '225'
- type: article
  title: 'Extending GMX: Conditional Likelihood Ratio Test and Extended Graphical
    Model Checks with psychotools'
  authors:
  - name: Rainer W. Alexandrowicz
  journal: Psychological Test and Assessment Modeling
  year: '2023'
  volume: '65'
  issue: '2'
  start: '259'
  end: '269'