The function of the Interagency Panel for Research and Development on Adolescence is to address the need in the Federal government to share meaningful research findings, to discuss plans, share problems, and to coordinate activities. This is the Panel's Third Annual Report and it includes the following discussions: (1) a summary of the year's activities of the Interagency Panel; (2) a summary of some of the major issues concerning youth and youth participation; (3) the utilization of the Panel's information system; (4) an analysis in some detail of the frequency and distributional patterns of current Federal research and development projects affecting youth; and, (5) a separate discussion of each of the 23 member agencies which participate on the Interagency Panel for Research and Development on Adolescence. (Author)