William Revelle (2026). psychTools: Tools to Accompany the 'psych' Package for Psychological Research. Northwestern University, Evanston, Illinois. R package version 2.6.4, https://CRAN.R-project.org/package=psychTools.

Corresponding BibTeX entry:

  @Manual{,
    title = {psychTools: Tools to Accompany the 'psych' Package for
      Psychological Research},
    author = {{William Revelle}},
    organization = {Northwestern University},
    address = {Evanston, Illinois},
    year = {2026},
    note = {R package version 2.6.4},
    url = {https://CRAN.R-project.org/package=psychTools},
  }