Title: Exploratory Factor Analysis Functions for Assessing Dimensionality Package: EFA.dimensions Type: Package Version: 0.1.8.6 Date: 2026-02-04 Authors@R: person(given = c("Brian", "P."), family = "O'Connor", role =c("aut","cre"), email="brian.oconnor@ubc.ca" ) Author: Brian P. O'Connor [aut, cre] Maintainer: Brian P. O'Connor Description: Functions for eleven procedures for determining the number of factors, including functions for parallel analysis and the minimum average partial test. There are also functions for conducting principal components analysis, principal axis factor analysis, maximum likelihood factor analysis, image factor analysis, and extension factor analysis, all of which can take raw data or correlation matrices as input and with options for conducting the analyses using Pearson correlations, Kendall correlations, Spearman correlations, gamma correlations, or polychoric correlations. Varimax rotation, promax rotation, and Procrustes rotations can be performed. Additional functions focus on the factorability of a correlation matrix, the congruences between factors from different datasets, the assessment of local independence, the assessment of factor solution complexity, internal consistency, and for correcting Pearson correlation coefficients for attenuation due to unreliability. Auerswald & Moshagen (2019, ISSN:1939-1463); Field, Miles, & Field (2012, ISBN:978-1-4462-0045-2); Mulaik (2010, ISBN:978-1-4200-9981-2); O'Connor (2000, ); O'Connor (2001, ISSN:0146-6216). Imports: stats, psych, polycor, EFAtools, utils, mirt, GPArotation Suggests: lattice LazyLoad: yes LazyData: yes License: GPL (>= 2) NeedsCompilation: no Packaged: 2026-07-04 06:09:15 UTC; root Config/pak/sysreqs: cmake make libicu-dev libuv1-dev libx11-dev Repository: https://bpoconnor.r-universe.dev Date/Publication: 2026-02-04 11:20:18 UTC RemoteUrl: https://github.com/cran/EFA.dimensions RemoteRef: HEAD RemoteSha: e4ba544b43b9cef70233543769bc82a2f4191c4e