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EFAtools: Fast and Flexible Implementations of Exploratory Factor Analysis Tools

Provides a complete workflow for exploratory factor analysis (EFA). It covers data screening and factorability checks, a suite of factor retention criteria for choosing the number of factors, and factor extraction by principal axis factoring, maximum likelihood, unweighted least squares, or diagonally weighted least squares from Pearson, Spearman, Kendall, polychoric, tetrachoric, or two-stage full-information maximum likelihood correlations. A built-in rotation engine offers a range of orthogonal and oblique rotations, and standard errors for loadings and related quantities can be obtained by analytic, robust, or bootstrap methods. Further tools support model averaging across analytic choices, multigroup EFA with factor congruence, EFA on multiply imputed data, Schmid-Leiman transformation, reliability coefficients (including McDonald's omegas), factor score estimation, data simulation, and power analysis. Computationally intensive procedures are implemented in 'C++' for speed.

Version: 1.0.0
Depends: R (≥ 4.1.0)
Imports: psych, stats, ggplot2 (≥ 3.4.0), cli, Rcpp, future.apply, checkmate, progressr, rlang, clue, lifecycle
LinkingTo: Rcpp, RcppArmadillo, roptim
Suggests: testthat (≥ 3.0.0), future, GPArotation (≥ 2022.4-1), lavaan, lavaan.mi, MASS, mice, knitr, rmarkdown, vdiffr, polycor, mnormt, fungible, semTools, withr
Published: 2026-07-23
DOI: 10.32614/CRAN.package.EFAtools
Author: Markus Steiner ORCID iD [aut, cre], Silvia Steiner ORCID iD [aut], William Revelle [ctb], Max Auerswald [ctb], Morten Moshagen [ctb], John Ruscio [ctb], Brendan Roche [ctb], Urbano Lorenzo-Seva [ctb], David Navarro-Gonzalez [ctb], Johan Braeken [ctb], Andreas Soteriades [ctb]
Maintainer: Markus Steiner <markus.d.steiner at gmail.com>
BugReports: https://github.com/mdsteiner/EFAtools/issues
License: GPL-3
URL: https://github.com/mdsteiner/EFAtools, https://mdsteiner.github.io/EFAtools/
NeedsCompilation: yes
Citation: EFAtools citation info
Materials: README, NEWS
CRAN checks: EFAtools results

Documentation:

Reference manual: EFAtools.html , EFAtools.pdf
Vignettes: EFAtools (source, R code)
Migrating to the efa_* interface (source, R code)
EFA with ordinal and missing data (source, R code)

Downloads:

Package source: EFAtools_1.0.0.tar.gz
Windows binaries: r-devel: EFAtools_0.8.0.zip, r-release: EFAtools_0.8.0.zip, r-oldrel: EFAtools_0.8.0.zip
macOS binaries: r-release (arm64): EFAtools_1.0.0.tgz, r-oldrel (arm64): EFAtools_1.0.0.tgz, r-release (x86_64): EFAtools_0.7.1.tgz, r-oldrel (x86_64): EFAtools_0.7.1.tgz
Old sources: EFAtools archive

Reverse dependencies:

Reverse imports: EFA.dimensions, FAfA
Reverse suggests: semanticfa

Linking:

Please use the canonical form https://CRAN.R-project.org/package=EFAtools to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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