.compute_vars           Compute explained variances from loadings
.factor_corres          Compute number of non-matching
                        indicator-to-factor correspondences
.nest_sym               Get reference values for nest.
.numformat              Format numbers for print method
.paf_iter               Perform the iterative PAF procedure
.parallel_sim           Parallel analysis on simulated data.
BARTLETT                Bartlett's test of sphericity
CD                      Comparison Data
COMPARE                 Compare two vectors or matrices (communalities
                        or loadings)
DOSPERT                 DOSPERT
DOSPERT_raw             DOSPERT_raw
EFA                     Exploratory factor analysis (EFA)
EFA_AVERAGE             Model averaging across different EFA methods
                        and types
EKC                     Empirical Kaiser Criterion
FACTOR_SCORES           Estimate factor scores for an EFA model
GRiPS_raw               GRiPS_raw
HULL                    Hull method for determining the number of
                        factors to retain
IDS2_R                  Intelligence subtests from the Intelligence and
                        Development Scales-2
KGC                     Kaiser-Guttman Criterion
KMO                     Kaiser-Meyer-Olkin criterion
NEST                    Next eigenvalue sufficiency test (NEST)
N_FACTORS               Various Factor Retention Criteria
OMEGA                   McDonald's omega
PARALLEL                Parallel analysis
RiskDimensions          RiskDimensions
SCREE                   Scree Plot
SL                      Schmid-Leiman Transformation
SMT                     Sequential Chi Square Model Tests, RMSEA lower
                        bound, and AIC
SPSS_23                 Various outputs from SPSS (version 23) FACTOR
SPSS_27                 Various outputs from SPSS (version 27) FACTOR
UPPS_raw                UPPS_raw
WJIV_ages_14_19         Woodcock Johnson IV: ages 14 to 19
WJIV_ages_20_39         Woodcock Johnson IV: ages 20 to 39
WJIV_ages_3_5           Woodcock Johnson IV: ages 3 to 5
WJIV_ages_40_90         Woodcock Johnson IV: ages 40 to 90 plus
WJIV_ages_6_8           Woodcock Johnson IV: ages 6 to 8
WJIV_ages_9_13          Woodcock Johnson IV: ages 9 to 13
plot.CD                 Plot CD object
plot.EFA_AVERAGE        Plot EFA_AVERAGE object
plot.EKC                Plot EKC object
plot.HULL               Plot HULL object
plot.KGC                Plot KGC object
plot.PARALLEL           Plot PARALLEL object
plot.SCREE              Plot SCREE object
population_models       population_models
print.BARTLETT          Print BARTLETT object
print.CD                Print function for CD objects
print.COMPARE           Print COMPARE object
print.EFA               Print EFA object
print.EFA_AVERAGE       Print EFA_AVERAGE object
print.EKC               Print function for EKC objects
print.HULL              Print function for HULL objects
print.KGC               Print function for KGC objects
print.KMO               Print KMO object
print.LOADINGS          Print LOADINGS object
print.NEST              Print function for NEST objects
print.N_FACTORS         Print function for N_FACTORS objects
print.OMEGA             Print OMEGA object
print.PARALLEL          Print function for PARALLEL objects
print.SCREE             Print function for SCREE objects
print.SL                Print SL object
print.SLLOADINGS        Print SLLOADINGS object
print.SMT               Print SMT object
test_models             Four test models used in Grieder and Steiner
                        (2020)
