This volume serves as an introduction to and a summary report of the project and provides a description of the context, the rationale, and the objectives of the Studies. The first five chapters describe the purposes to be served by the study, the preparations necessary to serve those purposes, the directions taken and the decisions made to accomplish the work, the variables selected as sources for data collection, and the primary vehicle used to present these data. Three of the next seven chapters serve as outline maps descriptive of the personnel, the outputs, and the work requirements found in educational RDD&E. The remaining four data chapters represent detailed maps, three of which describe the data in terms of the outputs selected as the focus of data collection, and one of which deals with special analyses of the data in response to a limited set of specific questions. The final four chapters of the volume discuss the implications of the Oregon Studies data for (1) conceptual and methodological development, (2) training personnel, (3) developing training models, and (4) further exploration and study. Related Documents are EA 004 583-589. (Pages 394 and 396 may reproduce poorly.) (Author/JH)