psych: Procedures for Psychological, Psychometric, and Personality Research

A general purpose toolbox 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. Functions for simulating and testing particular item and test structures are included. Several functions serve as a useful front end for structural equation modeling. Graphical displays of path diagrams, 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 <> web page.

AuthorWilliam Revelle <>
Date of publication2017-03-22 08:55:23 UTC
MaintainerWilliam Revelle <>
LicenseGPL (>= 2)

View on CRAN

Man pages

00.psych-package: A package for personality, psychometric, and psychological...

ability: 16 ability items scored as correct or incorrect.

affect: Two data sets of affect and arousal scores as a function of...

alpha: Find two estimates of reliability: Cronbach's alpha and...

best.scales: A set of functions for factorial and empirical scale...

bfi: 25 Personality items representing 5 factors

bi.bars: Draw pairs of bargraphs based on two groups

bifactor: Seven data sets showing a bifactor solution.

biplot.psych: Draw biplots of factor or component scores by factor or...

block.random: Create a block randomized structure for n independent...

blot: Bond's Logical Operations Test - BLOT

bock.table: Bock and Liberman (1970) data set of 1000 observations of the...

burt: 11 emotional variables from Burt (1915)

cattell: 12 cognitive variables from Cattell (1963)

circ.tests: Apply four tests of circumplex versus simple structure

cities: Distances between 11 US cities

cluster2keys: Convert a cluster vector (from e.g., kmeans) to a keys matrix...

cluster.cor: Find correlations of composite variables (corrected for... cluster Fit: fit of the cluster model to a correlation matrix

cluster.loadings: Find item by cluster correlations, corrected for overlap and...

cluster.plot: Plot factor/cluster loadings and assign items to clusters by...

comorbidity: Convert base rates of two diagnoses and their comorbidity...

cor2dist: Convert correlations to distances (necessary to do... Bootstrapped confidence intervals for raw and composite...

corFiml: Find a Full Information Maximum Likelihood (FIML) correlation...

cor.plot: Create an image plot for a correlation or factor matrix

correct.cor: Find dis-attenuated correlations given correlations and...

corr.test: Find the correlations, sample sizes, and probability values...

cor.smooth: Smooth a non-positive definite correlation matrix to make it...

cortest.bartlett: Bartlett's test that a correlation matrix is an identity...

cortest.mat: Chi square tests of whether a single matrix is an identity...

cor.wt: The sample size weighted correlation may be used in...

cosinor: Functions for analysis of circadian or diurnal data

count.pairwise: Count number of pairwise cases for a data set with missing...

cta: Simulate the C(ues) T(endency) A(ction) model of motivation

cubits: Galton's example of the relationship between height and...

cushny: A data set from Cushny and Peebles (1905) on the effect of...

densityBy: Create a 'violin plot' or density plot of the distribution of...

deprecated: Deprecated Exploratory Factor analysis functions. Please use...

describe: Basic descriptive statistics useful for psychometrics Basic summary statistics by group

df2latex: Convert a data frame, correlation matrix, or factor analysis...

dfOrder: Sort (order) a dataframe or matrix by multiple columns

diagram: Helper functions for drawing path model diagrams

draw.tetra: Draw a correlation ellipse and two normal curves to...

dummy.code: Create dummy coded variables

dwyer: 8 cognitive variables used by Dwyer for an example.

eigen.loadings: Convert eigen vectors and eigen values to the more normal...

ellipses: Plot data and 1 and 2 sigma correlation ellipses

epi: Eysenck Personality Inventory (EPI) data for 3570...

epi.bfi: 13 personality scales from the Eysenck Personality Inventory...

error.bars: Plot means and confidence intervals Plot means and confidence intervals for multiple groups

error.circles: Two way plots of means, error bars, and sample sizes

error.crosses: Plot x and y error bars

error.dots: Show a dot.chart with error bars for different groups or...

esem: Perform and Exploratory Structural Equation Model (ESEM) by...

fa: Exploratory Factor analysis using MinRes (minimum residual)...

factor2cluster: Extract cluster definitions from factor loadings

factor.congruence: Coefficient of factor congruence How well does the factor model fit a correlation matrix. Part...

factor.model: Find R = F F' + U2 is the basic factor model

factor.residuals: R* = R- F F'

factor.rotate: "Hand" rotate a factor loading matrix

factor.scores: Various ways to estimate factor scores for the factor...

factor.stats: Find various goodness of fit statistics for factor analysis...

fa.diagram: Graph factor loading matrices

fa.extension: Apply Dwyer's factor extension to find factor loadings for...

faMulti: Multi level (hierarchical) factor analysis

fa.parallel: Scree plots of data or correlation matrix compared to random...

fa.sort: Sort factor analysis or principal components analysis...

fisherz: Transformations of r including Fisher r to z and z to r and...

galton: Galton's Mid parent child height data

geometric.mean: Find the geometric mean of a vector or columns of a...

glb.algebraic: Find the greatest lower bound to reliability.

Gleser: Example data from Gleser, Cronbach and Rajaratnam (1965) to...

Gorsuch: Example data set from Gorsuch (1997) for an example factor...

guttman: Alternative estimates of test reliabiity

Harman: Two data sets from Harman (1967). 9 cognitive variables from...

Harman.5: 5 socio-economic variables from Harman (1967)

Harman.8: Correlations of eight physical variables (from Harman, 1966)

Harman.political: Eight political variables used by Harman (1967) as example...

harmonic.mean: Find the harmonic mean of a vector, matrix, or columns of a...

headtail: Combine calls to head and tail

heights: A data.frame of the Galton (1888) height and cubit data set.

ICC: Intraclass Correlations (ICC1, ICC2, ICC3 from Shrout and...

ICLUST: iclust: Item Cluster Analysis - Hierarchical cluster analysis...

ICLUST.cluster: Function to form hierarchical cluster analysis of items

iclust.diagram: Draw an ICLUST hierarchical cluster structure diagram

ICLUST.graph: create control code for ICLUST graphical output

ICLUST.rgraph: Draw an ICLUST graph using the Rgraphviz package

ICLUST.sort: Sort items by absolute size of cluster loadings

income: US family income from US census 2008

interp.median: Find the interpolated sample median, quartiles, or specific...

iqitems: 16 multiple choice IQ items

irt.fa: Item Response Analysis by Exploratory Factor Analysis of...

irt.item.diff.rasch: Simple function to estimate item difficulties using IRT...

irt.person.rasch: Item Response Theory estimate of theta (ability) using a...

irt.responses: Plot probability of multiple choice responses as a function...

kaiser: Apply the Kaiser normalization when rotating factors

kappa: Find Cohen's kappa and weighted kappa coefficients for...

KMO: Find the Kaiser, Meyer, Olkin Measure of Sampling Adequacy

logistic: Logistic transform from x to p and logit transform from p to...

lowerUpper: Combine two square matrices to have a lower off diagonal for...

make.keys: Create a keys matrix for use by score.items or cluster.cor

matrix.addition: A function to add two vectors or matrices

mat.sort: Sort the elements of a correlation matrix to reflect factor...

mediate: Estimate and display direct and indirect effects of mediators...

misc: Miscellaneous helper functions for the psych package

mixed.cor: Find correlations for mixtures of continuous, polytomous, and...

msq: 75 mood items from the Motivational State Questionnaire for...

mssd: Find von Neuman's Mean Square of Successive Differences

multi.hist: Multiple histograms with density and normal fits on one page

multilevel.reliability: Find and plot various reliability/gneralizability...

neo: NEO correlation matrix from the NEO_PI_R manual

omega: Calculate McDonald's omega estimates of general and total...

omega.graph: Graph hierarchical factor structures

outlier: Find and graph Mahalanobis squared distances to detect...

paired.r: Test the difference between (un)paired correlations

pairs.panels: SPLOM, histograms and correlations for a data matrix

parcels: Find miniscales (parcels) of size 2 or 3 from a set of items

partial.r: Find the partial correlations for a set (x) of variables with...

peas: Galton's Peas

phi: Find the phi coefficient of correlation between two...

phi2poly: Convert a phi coefficient to a tetrachoric correlation

phi.demo: A simple demonstration of the Pearson, phi, and polychoric...

plot.psych: Plotting functions for the psych package of class "psych"

polar: Convert Cartesian factor loadings into polar coordinates

polychor.matrix: Phi or Yule coefficient matrix to polychoric coefficient...

predict.psych: Prediction function for factor analysis or principal...

p.rep: Find the probability of replication for an F, t, or r and...

principal: Principal components analysis (PCA)

print.psych: Print and summary functions for the psych class

Promax: Perform bifactor, promax or targeted rotations and return the...

range.correction: Correct correlations for restriction of range. (Thorndike...

read.clipboard: Shortcuts for reading from the clipboard or a file

rescale: Function to convert scores to "conventional " metrics

residuals.psych: Extract residuals from various psych objects

reverse.code: Reverse the coding of selected items prior to scale analysis

r.test: Tests of significance for correlations

sat.act: 3 Measures of ability: SATV, SATQ, ACT

scaling.fits: Test the adequacy of simple choice, logistic, or Thurstonian...

scatter.hist: Draw a scatter plot with associated X and Y histograms,...

schmid: Apply the Schmid Leiman transformation to a correlation...

Schmid.Leiman: 12 variables created by Schmid and Leiman to show the...

Schutz: The Schutz correlation matrix example from Shapiro and ten...

score.alpha: Score scales and find Cronbach's alpha as well as associated...

score.irt: Find Item Response Theory (IRT) based scores for dichotomous...

score.items: Score item composite scales and find Cronbach's alpha,...

score.multiple.choice: Score multiple choice items and provide basic test statistics

scrub: A utility for basic data cleaning and recoding. Changes...

SD: Find the Standard deviation for a vector, matrix, or...

set.cor: Set Correlation and Multiple Regression from matrix or raw...

sim: Functions to simulate psychological/psychometric data.

sim.anova: Simulate a 3 way balanced ANOVA or linear model, with or...

sim.congeneric: Simulate a congeneric data set

sim.hierarchical: Create a population or sample correlation matrix, perhaps...

sim.item: Generate simulated data structures for circumplex, spherical,...

sim.multilevel: Simulate multilevel data with specified within group and...

sim.structural: Create correlation matrices or data matrices with a...

simulation.circ: Simulations of circumplex and simple structure

sim.VSS: create VSS like data

skew: Calculate univariate or multivariate (Mardia's test) skew and...

smc: Find the Squared Multiple Correlation (SMC) of each variable...

spider: Make "radar" or "spider" plots.

statsBy: Find statistics (including correlations) within and between...

structure.diagram: Draw a structural equation model specified by two measurement...

structure.list: Create factor model matrices from an input list

super.matrix: Form a super matrix from two sub matrices.

table2matrix: Convert a table with counts to a matrix or data.frame...

test.irt: A simple demonstration (and test) of various IRT scoring...

test.psych: Testing of functions in the psych package

tetrachor: Tetrachoric, polychoric, biserial and polyserial correlations...

thurstone: Thurstone Case V scaling

tr: Find the trace of a square matrix

Tucker: 9 Cognitive variables discussed by Tucker and Lewis (1973)

unidim: Several indices of the unidimensionality of a set of...

vegetables: Paired comparison of preferences for 9 vegetables

VSS: Apply the Very Simple Structure, MAP, and other criteria to...

VSS.parallel: Compare real and random VSS solutions

VSS.plot: Plot VSS fits

VSS.scree: Plot the successive eigen values for a scree test

winsor: Find the Winsorized scores, means, sds or variances for a...

withinBetween: An example of the distinction between within group and...

Yule: From a two by two table, find the Yule coefficients of...


\%+\% Man page
00.psych-package Man page
ability Man page
affect Man page
all.income Man page
alpha Man page
alpha.scale Man page
anova.psych Man page
autoR Man page
Bechtoldt Man page
Bechtoldt.1 Man page
Bechtoldt.2 Man page
bestItems Man page
bestScales Man page
bfi Man page
bfi.dictionary Man page
bi.bars Man page
bifactor Man page
biplot.psych Man page
biquartimin Man page
biserial Man page
block.random Man page
blot Man page
bock Man page
bock.lsat Man page
bock.table Man page
burt Man page
cattell Man page
char2numeric Man page
Chen Man page
chi2r Man page
circadian.cor Man page
circadian.F Man page
circadian.linear.cor Man page
circadian.mean Man page
circadian.phase Man page
circadian.reliability Man page Man page
circadian.stats Man page
circ.sim Man page
circ.sim.plot Man page
circ.simulation Man page
circ.tests Man page
circular.cor Man page
circular.mean Man page
cities Man page
city.location Man page
cluster2keys Man page
cluster.cor Man page Man page
cluster.loadings Man page
cluster.plot Man page
cohen.kappa Man page
comorbidity Man page
con2cat Man page
congeneric.sim Man page
cor2 Man page
cor2dist Man page
cor2latex Man page Man page
corCi Man page
corFiml Man page
cor.plot Man page
corPlot Man page
cor.plot.upperLowerCi Man page
correct.cor Man page
corr.p Man page
corr.test Man page
cor.smooth Man page
cor.smoother Man page
cortest Man page
cortest.bartlett Man page
cortest.jennrich Man page
cortest.mat Man page
cortest.normal Man page
cor.wt Man page
cosinor Man page
cosinor.period Man page
cosinor.plot Man page
count.pairwise Man page
cta Man page
cta.15 Man page
cubits Man page
cushny Man page
d2r Man page
densityBy Man page
describe Man page Man page
describeBy Man page
describeData Man page
df2latex Man page
dfOrder Man page
diagram} \alias{dia.rect} \alias{dia.ellipse} \alias{dia.ellipse Man page
draw.cor Man page
draw.tetra Man page
dummy.code Man page
Dwyer Man page
eigen.loadings Man page
ellipses Man page
epi Man page
epi.bfi Man page
epi.dictionary Man page
equamax Man page
error.bars Man page Man page Man page
errorCircles Man page
error.crosses Man page
error.dots Man page
esem Man page
esem.diagram Man page
fa Man page
fa2irt Man page
fa2latex Man page
faBy Man page
fac Man page
fa.congruence Man page
factor2cluster Man page
factor.congruence Man page Man page
factor.minres Man page
factor.model Man page Man page
factor.plot Man page
factor.residuals Man page
factor.rotate} \title{``Hand" rotate a factor loading matrix } \ Man page
factor.scores Man page
factor.stats Man page
factor.wls Man page
fa.diagram Man page
fa.extend Man page
fa.extension Man page
fa.graph Man page
fa.lookup Man page
fa.multi Man page
fa.multi.diagram Man page
fa.organize Man page
fa.parallel Man page
fa.parallel.poly Man page
fa.plot Man page
fa.poly Man page
fa.rgraph Man page
fa.sort Man page
fa.stats Man page
fisherz Man page
fisherz2r Man page
flat Man page
g2r Man page
galton Man page
geometric.mean Man page
glb Man page
glb.algebraic Man page
glb.fa Man page
Gleser Man page
Gorsuch Man page
guttman Man page
Harman Man page
Harman.5 Man page
Harman.8 Man page
Harman.Burt Man page
Harman.Holzinger Man page
Harman.political Man page
harmonic.mean Man page
headtail Man page
headTail Man page
heights Man page
het.diagram Man page
histBy Man page
histo.density Man page
Holzinger Man page
Holzinger.9 Man page
ICC Man page
ICC2latex Man page
iclust Man page
ICLUST Man page
ICLUST.cluster Man page
iclust.diagram Man page
ICLUST.diagram Man page
iclust.graph Man page
ICLUST.graph Man page
ICLUST.rgraph Man page
iclust.sort Man page
ICLUST.sort Man page
income Man page
interbattery Man page
interp.boxplot Man page
interp.median Man page
interp.q Man page Man page
interp.quantiles Man page
interp.quart Man page
interp.quartiles Man page
interp.values Man page
iqitems Man page
irt.0p Man page
irt.1p Man page
irt2latex Man page
irt.2p Man page
irt.discrim Man page
irt.fa Man page
irt.item.diff.rasch Man page
irt.person.rasch Man page
irt.responses Man page Man page Man page
irt.tau Man page
isCorrelation Man page
item.dichot Man page
item.lookup Man page
item.sim Man page
kaiser Man page
keys2list Man page
keys.lookup Man page
keysort Man page
KMO Man page
kurtosi Man page
lavaan.diagram Man page
levels2numeric Man page
logistic Man page
logistic.grm Man page
logit Man page
lookup Man page
lowerCor Man page
lowerMat Man page
lowerUpper Man page
lsat6 Man page
lsat7 Man page
make.congeneric Man page
make.hierarchical Man page
make.keys Man page
MAP Man page
maps Man page
mardia Man page
matReg Man page
mat.regress Man page
matrix.addition Man page
mat.sort Man page
mediate Man page
mediate.diagram Man page
minkowski Man page
misc Man page
mixed.cor Man page
mlArrange Man page
mlPlot Man page
mlr Man page
moderate.diagram Man page
msq Man page
mssd Man page
multi.hist Man page
multilevel.reliability Man page
neo Man page
nfactors Man page
omega Man page
omega2latex Man page
omega.diagram Man page
omegaFromSem Man page
omega.graph Man page
omegah Man page
omegaSem Man page
outlier Man page
paired.r Man page
pairs.panels Man page
pairwiseDescribe Man page
panel.cor Man page
panel.cor.scale Man page
panel.ellipse Man page
panel.hist Man page
panel.hist.density Man page
panel.lm Man page
panel.lm.ellipse Man page
panel.smoother Man page
parcels Man page
partial.r Man page
pca Man page
peas Man page
phi Man page
phi2poly Man page
phi2poly.matrix Man page
phi2tetra Man page
phi.demo Man page
phi.list Man page
plot.irt Man page
plot.poly Man page
plot.poly.parallel Man page
plot.psych Man page
plot.residuals Man page
polar Man page
polychoric Man page
polychor.matrix Man page
polydi Man page
poly.mat Man page
polyserial Man page
predict.psych Man page
p.rep Man page
p.rep.f Man page
p.rep.r Man page
p.rep.t Man page
principal Man page
print.psych Man page
progressBar Man page
Promax Man page
psych Man page
psych.misc Man page
psych-package Man page
r2c Man page
r2chi Man page
r2d Man page
r2t Man page
radar Man page
rangeCorrection Man page
r.con Man page
read.clipboard Man page
read.clipboard.csv Man page
read.clipboard.fwf Man page
read.clipboard.lower Man page Man page
read.clipboard.upper Man page
read.file Man page
read.file.csv Man page
read.https Man page
reflect Man page
Reise Man page
rescale Man page
resid.psych Man page
residuals.psych Man page
response.frequencies Man page
reverse.code Man page
rmssd Man page
r.test Man page
sat.act Man page
scaling.fits Man page
scatter.hist Man page
scatterHist Man page
schmid Man page
Schmid Man page
schmid.leiman Man page
Schutz Man page
score.alpha Man page
scoreFast Man page
score.irt Man page
scoreIrt Man page
scoreIrt.1pl Man page
score.irt.2 Man page
scoreIrt.2pl Man page
score.irt.poly Man page
score.items Man page
scoreItems Man page
score.multiple.choice Man page
scoreOverlap Man page
scree Man page
scrub Man page
SD Man page
set.cor Man page
setCor Man page
setCor.diagram Man page
shannon Man page
sim Man page
sim.anova Man page
sim.circ Man page
sim.congeneric Man page
sim.correlation Man page
sim.dichot Man page
sim.general Man page
sim.hierarchical Man page
sim.irt Man page
sim.item Man page
sim.minor Man page
sim.multi Man page
sim.multilevel Man page
sim.npl Man page
sim.npn Man page Man page
sim.parallel Man page
sim.poly Man page
sim.poly.ideal Man page
sim.poly.ideal.npl Man page
sim.poly.ideal.npn Man page
sim.poly.mat Man page
sim.poly.npl Man page
sim.poly.npn Man page
sim.rasch Man page
sim.simplex Man page
sim.spherical Man page
sim.structural Man page
sim.structure Man page
simulation.circ Man page
simulation.circ Man page
sim.VSS Man page
skew Man page
smc Man page
spider Man page
splitHalf Man page
statsBy Man page
statsBy.boot Man page
statsBy.boot.summary Man page
structure.diagram Man page
structure.graph Man page
structure.list Man page
structure.sem Man page
summary.psych Man page
super.matrix Man page
superMatrix Man page
t2r Man page
table2df Man page
table2matrix Man page
tableF Man page
TargetQ Man page
target.rot Man page
tenberge Man page
test.all Man page
test.irt Man page
test.psych Man page
tetrachor Man page
tetrachoric Man page
thurstone Man page
Thurstone Man page
Thurstone.33 Man page
topBottom Man page
tr Man page
Tucker Man page
unidim Man page
varimin Man page
veg Man page
vegetables Man page
vgQ.bimin Man page
vgQ.targetQ Man page
vgQ.varimin Man page
violinBy Man page
vss Man page
VSS Man page
VSS.parallel Man page
VSS.plot Man page
VSS.scree Man page
VSS.sim Man page
VSS.simulate Man page
West Man page
winsor Man page
winsor.mean Man page
winsor.means Man page Man page
winsor.var Man page
withinBetween Man page
wkappa Man page
write.file Man page
write.file.csv Man page
Yule Man page
Yule2phi Man page
Yule2phi.matrix Man page
Yule2poly Man page
Yule2poly.matrix Man page
Yule2tetra Man page
YuleBonett Man page
YuleCor Man page
Yule.inv Man page


psych/R/sim.structural.R psych/R/print.psych.schmid.R psych/R/superMatrix.R psych/R/Yule.R psych/R/comorbidity.R psych/R/cortest.mat.R psych/R/principal.R psych/R/error.bars.R psych/R/phi2poly.R
psych/R/guttman.R psych/R/faBy.R psych/R/cor2dist.R psych/R/VSS.R
psych/R/mat.plot.R psych/R/circ.sim.plot.R psych/R/statsBy.boot.R psych/R/error.crosses.R psych/R/table2matrix.R psych/R/dia.cone.R psych/R/irt.2p.R psych/R/glb.R psych/R/phi.R psych/R/tenberge.R psych/R/omega.diagram.R psych/R/spider.R psych/R/omega.R psych/R/factor2cluster.R psych/R/ psych/R/print.psych.stats.R psych/R/glbs.R psych/R/cortest.jennrich.R psych/R/plot.irt.R
psych/R/omegaSem.R psych/R/print.psych.R psych/R/partial.r.R psych/R/score.items.R psych/R/print.psych.iclust.R psych/R/circ.sim.R psych/R/fix.dplyr.R psych/R/Promax.R psych/R/winsor.R psych/R/irt.0p.R psych/R/VSS.scree.R psych/R/cluster.plot.R psych/R/fa.multi.R psych/R/mat.regress.R psych/R/outlier.R psych/R/biplot.psych.R psych/R/plot.psych.R psych/R/fa.graph.R psych/R/simulation.circ.R
psych/R/ICLUST.R psych/R/corr.test.R psych/R/polychor.matrix.R psych/R/multi.hist.R psych/R/r.test.R psych/R/fisherz.R psych/R/fiml.R psych/R/ psych/R/mat.sqrt.R psych/R/omega.bifactor.R psych/R/cluster.loadings.R psych/R/alpha.scale.R psych/R/sim.multilevel.R psych/R/sim.dichot.R psych/R/cluster.cor.R psych/R/factor.model.R psych/R/cor.plot.R psych/R/print.psych.vss.R psych/R/cortest.bartlett.R psych/R/fa.parallel.poly.R psych/R/make.hierarchical.R psych/R/irt.1p.R psych/R/congeric.sim.R psych/R/bi.bars.R psych/R/cosinor.R psych/R/anova.psych.R psych/R/omega.graph.R psych/R/schmid.R psych/R/predict.principal.R psych/R/irt.fa.R psych/R/rescale.R psych/R/smc.R psych/R/pairs.panels.R psych/R/parcels.R psych/R/sim.VSS.R psych/R/ psych/R/psych.R
psych/R/fa.extension.R psych/R/make.congeneric.R psych/R/alpha.R psych/R/item.sim.R psych/R/ psych/R/eigen.loadings.R psych/R/VSS.simulate.R psych/R/fa.parallel.R psych/R/irt.discrim.R psych/R/df2latex.R psych/R/slipHalf.R psych/R/ psych/R/factor.residuals.R psych/R/VSS.plot.R psych/R/reverse.code.R psych/R/test.all.R psych/R/set.cor.R psych/R/r.con.R psych/R/polychoric.R psych/R/cta.R psych/R/scatter.hist.R psych/R/structure.diagram.R psych/R/thurstone.R psych/R/ psych/R/ psych/R/VSS.parallel.R psych/R/reverseKey.R psych/R/lavaan.diagram.R psych/R/SD.R psych/R/kappa.R psych/R/diagram.R psych/R/summary.psych.R psych/R/mixed.cor.R psych/R/correct.cor.R psych/R/VSSem.R psych/R/residuals.psych.R psych/R/fa.diagram.R psych/R/structure.graph.R psych/R/ICC.R
psych/R/ psych/R/make.keys.R psych/R/draw.tetra.R psych/R/sim.anova.R psych/R/paired.r.R psych/R/geometric.mean.R psych/R/read.clipboard.R psych/R/bifactor.R psych/R/block.random.R psych/R/structure.list.R psych/R/irt.person.rasch.R psych/R/sim.hierarchical.R psych/R/p.rep.R psych/R/ICLUST.sort.R psych/R/cortest.R psych/R/ellipses.R psych/R/phi.demo.R psych/R/glb.algebraic.R psych/R/sim.congeneric.R psych/R/ICLUST.diagram.R psych/R/ICLUST.rgraph.R psych/R/circ.tests.R psych/R/target.rot.R psych/R/score.multiple.choice.R psych/R/multilevel.reliability.R psych/R/esem.diagram.R
psych/R/ psych/R/circ.simulation.R psych/R/esem.R psych/R/factor.stats.R psych/R/splitHalf.R psych/R/interp.median.R
psych/R/ICLUST.graph.R psych/R/headtail.R psych/R/cortest.normal.R psych/R/matrix.addition.R
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