| ckappa | Cohen's Kappa for 2 raters | 
| cronbach | Cronbach's coefficient alpha | 
| ehd | Depressive Mood Scale | 
| expsy | Data set related to psychometry | 
| fpca | Focused Principal Components Analysis | 
| icc | Intraclass correlation coefficient (ICC) | 
| lkappa | Light's kappa for n raters | 
| mdspca | Graphical representation of a correlation matrix using a Principal Component Analysis | 
| mtmm | Multitrait Multimethod approach of scale validation | 
| psy | Various procedures used in psychometry | 
| scree.plot | Screeplot of eigenvalues, simulated data are available | 
| sleep | Ecological and Constitutional Data in Mammals | 
| sphpca | Spherical Representation of a Correlation Matrix | 
| wkappa | weighted Kappa for 2 raters |