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# CITATION 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 "psych" in publications use:'
type: software
license: GPL-2.0-or-later
title: 'psych: Procedures for Psychological, Psychometric, and Personality Research'
version: 2.4.6.26
identifiers:
- type: doi
  value: 10.32614/CRAN.package.psych
- type: url
  value: https://personality-project.org/r/psych-manual.pdf
abstract: A general purpose toolbox developed originally for personality, psychometric
  theory and experimental psychology. Functions are primarily for multivariate analysis
  and scale construction using factor analysis, principal component analysis, cluster
  analysis and reliability analysis, although others provide basic descriptive statistics.
  Item Response Theory is done using factor analysis of tetrachoric and polychoric
  correlations. Functions for analyzing data at multiple levels include within and
  between group statistics, including correlations and factor analysis. Validation
  and cross validation of scales developed using basic machine learning algorithms
  are provided, as are functions for simulating and testing particular item and test
  structures. Several functions serve as a useful front end for structural equation
  modeling. Graphical displays of path diagrams, including mediation models, factor
  analysis and structural equation models are created using basic graphics. Some of
  the functions are written to support a book on psychometric theory as well as publications
  in personality research. For more information, see the <https://personality-project.org/r/>
  web page.
authors:
- family-names: Revelle
  given-names: William
  email: revelle@northwestern.edu
  orcid: https://orcid.org/0000-0003-4880-9610
preferred-citation:
  type: manual
  title: 'psych: Procedures for Psychological, Psychometric, and Personality Research'
  authors:
  - name: William Revelle
  institution:
    name: Northwestern University
    address: Evanston, Illinois
  year: '2024'
  notes: R package version 2.4.6
  url: https://CRAN.R-project.org/package=psych
repository: https://rforms.r-universe.dev
commit: 26a808800dd34f47208727531ac7ebf988515b7f
url: https://personality-project.org/r/psych/
date-released: '2024-06-26'
contact:
- family-names: Revelle
  given-names: William
  email: revelle@northwestern.edu
  orcid: https://orcid.org/0000-0003-4880-9610