This report describes a workshop at which Army researchers presented some results from the first phase of a two-phase Joint-Service Project. (The objective of this phase was to determine if technically adequate criterion measures can be developed that are representative of job performance.) Part I of the report presents the preliminary results of the research of the Army's Project A, a selection and classification project. It describes the data collection and the Army researchers' analysis and preliminary conclusions based on those data and concludes with the Committee on the Performance of Military Personnel's reaction to the Army's efforts, as they pertain to the Joint-Service Job Performance Measurement/Enlistment Standards Project. Part II consists of a series of recommendations to the Job Performance Measurement Working Group for a core set of analyses of the job performance data collected by the Services over the past several years. The recommendations fall into two broad categories. The first and larger set deals with scientific evaluation of the performance data, including recommendations on scoring and scaling, handling missing data, reliability analysis, and exploring score relationships. The concluding set of recommendations concerns analyses specifically designed to labor force policy decisions. (YLB)