Abstract : This report describes a large scale research effort to validate and improve the ASVAB aptitude area (AA) composites now used by the Army to select and classify enlisted personnel. Data were collected from existing Army sources on over 60,000 soldiers and over 60 MOS. The research had three major components: First, the composites now being used by the Army were validated. Second, a new set of composites were derived empirically; and finally, both sets were compared on the basis of predictive validity, differential validity, and possible prediction bias. Both sets of composites were found to perform well, with the alternative set of four composites doing slightly better than the nine now in operational use.
