This report reviews and relates to each other the major concepts and theories that differentiate and define the constructs of motivation, satisfaction, and morale. It also describes and summarizes the potentialities of instruments and methods for measuring these concepts, with the focus on those theories and instruments most likely to be usefully applied in the context of the Army. Concepts of motivation are divided into content theories, which answer the question of what motivates people, and equity process theories, which answer how environmental factors and individual needs determine behavior. Job satisfaction is conceptualized in terms of need fullfillment, equity, and frame of reference models. Morale is conceptualized in terms of its components rather than as a single global construct. A number of practical implications for action are derived from the theories. Results are presented of a review of published and unpublished literature on the development and use of instruments to measure motivation, satisfaction, and morale at the work place, and on the reliability, validity, and practicality of the instruments. A final summary chapter includes an annotated list of instruments and methods (four for motivation, six for job satisfaction, and no self-report instruments for morale) deemed most likely to be useful to the Army. The twenty-page list of references is included. (Author/JT)