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Package 'Psych' Package ‘psych’ March 27, 2021 Version 2.1.3 Date 2021-03-21 Title Procedures for Psychological, Psychometric, and Personality Research Description A general purpose toolbox for personality, psychometric theory and experimental psy- chology. Functions are primarily for multivariate analysis and scale construction using fac- tor analysis, principal component analysis, cluster analysis and reliability analysis, although oth- ers provide basic descriptive statistics. Item Response Theory is done using factor analy- sis of tetrachoric and polychoric correlations. Functions for analyzing data at multiple levels in- clude within and between group statistics, including correlations and factor analysis. Func- tions for simulating and testing particular item and test structures are included. Several func- tions serve as a useful front end for structural equation modeling. Graphical displays of path di- agrams, factor analysis and structural equation models are created using basic graph- ics. Some of the functions are written to support a book on psychometric theory as well as publi- cations in personality research. For more information, see the <https://personality- project.org/r/> web page. License GPL (>= 2) Imports mnormt,parallel,stats,graphics,grDevices,methods,lattice,nlme Suggests psychTools, GPArotation, lavaan, lme4, Rcsdp, graph, knitr, Rgraphviz LazyData yes ByteCompile TRUE VignetteBuilder knitr URL https://personality-project.org/r/psych/ https://personality-project.org/r/psych-manual.pdf NeedsCompilation no Author William Revelle [aut, cre] (<https://orcid.org/0000-0003-4880-9610>) Maintainer William Revelle <[email protected]> R topics documented: 00.psych . .5 alpha . 14 anova.psych . 19 AUC............................................. 20 1 2 R topics documented: bassAckward . 23 Bechtoldt . 26 bestScales . 29 bfi.............................................. 34 bi.bars . 36 biplot.psych . 37 block.random . 39 bock............................................. 40 cattell . 41 circ.tests . 42 cluster.fit . 44 cluster.loadings . 46 cluster.plot . 47 cluster2keys . 49 cohen.d . 50 cohen.kappa . 52 comorbidity . 56 cor.plot . 58 cor.smooth . 61 cor.wt . 63 cor2dist . 65 corCi . 65 corFiml . 68 corr.test . 69 correct.cor . 71 cortest.bartlett . 73 cortest.mat . 74 cosinor . 76 cta.............................................. 80 densityBy . 83 describe . 85 describeBy . 88 diagram . 90 draw.tetra . 93 dummy.code . 94 Dwyer . 95 eigen.loadings . 96 ellipses . 97 error.bars . 98 error.bars.by . 102 error.crosses . 105 error.dots . 107 errorCircles . 109 esem............................................. 111 fa .............................................. 115 fa.diagram . 126 fa.extension . 130 fa.lookup . 133 fa.multi . 136 fa.parallel . 139 fa.poly . 143 fa.random . 148 R topics documented: 3 fa.sort . 153 faCor ............................................ 154 factor.congruence . 156 factor.fit . 158 factor.model . 160 factor.residuals . 161 factor.rotate . 162 factor.scores . 163 factor.stats . 165 factor2cluster . 167 fisherz . 168 fparse . 170 Garcia . 171 geometric.mean . 172 glb.algebraic . 173 Gleser . 176 Gorsuch . 177 Harman . 178 harmonic.mean . 180 headTail . 181 ICC ............................................. 182 iclust . 184 ICLUST.cluster . 189 iclust.diagram . 190 ICLUST.graph . 192 ICLUST.rgraph . 195 ICLUST.sort . 197 interp.median . 198 irt.1p . ..
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