"In the early 1990s, the Department of the Army abandoned its Skill Qualification Test (SOT) program due primarily to maintenance, development, and administration costs. This left a void in the Army's capabilities for assessing job performance qualification. To meet this need, the U.S. Army Research Institute for the Behavioral and Social Sciences (ARI) instituted a 3-year program of feasibility research related to the development of a Soldier assessment system that is both effective and affordable. The PerformM21 program has two mutually supporting tracks. The first focuses on the design of a testing program and identification of issues related to its implementation. The second track is a demonstration of concept - starting with a prototype core assessment targeted to all Soldiers eligible for promotion to Sergeant, followed by job-specific prototype assessments for several Military Occupational Specialties (MOS). The prototype assessments were developed during the first 2 years of the research program. The present report describes work conducted in the final year of the PerformM21 program, in which five prototype MOS-specific assessments (along with the common core examination) were pilot tested on a sample of specialists/corporals."--Stinet.