In response to continuing requirements of the Deputy Chief of Staff for Personnel (DCSPER), Department of Army, the INPUT QUALITY Task directed its research efforts to developing new approaches to screening problems and to contributions of screening activities to classification and other manpower management functions. Successive forms of general military trainability measures--Armed Forces Qualification Test (AFQT) and Enlistment Screening Test (EST)--and supplementary measures of specific aptitudes (Army Qualification Battery, AQB)--were developed and produced to aid in more effectively determining enlistment eligibility.