Provides tools useful for measurement theory (Allen & Yen 2001)<ISBN: 157766230X>, meta-analysis (validity-generalization) (Schmidt & Hunter)<doi:10.4135/9781483398105>, reliability, item analysis, inter-rater reliability, classical utility, and correlation analysis (Cohen et. al. 2003)<doi:10.4324/9780203774441>.
copied from cf-staging / r-psychometric