This report summarized methodology employed to disseminate social science knowledge for use in manpower agencies in a manner designed to increase the probability of correct application of the knowledge in the task performances of manpower workers. The report covers methods of retrieving and synthesizing relevant research, organizing the knowledge into diffusable sets of materials, media use, teaching/learning strategies, and methods of dissemination through the manpower system. Methods employed in the development of a manual on role modeling and role playing, a set of audiotapes plus workbooks on simulation and imitation, and a multi-media package of Group Leadership Techniques Workshop materials are applied to the development of diffusable materials whose objective is to increase the capacity of local manpower agencies to adopt new methods. Thus a total model for development work comprising retrieval, media and methods of communication, diffusion, and adoption is generated. (Author)