Strengths and weaknesses of three types of semiquantitative methods used by the federal government in research impact assessment are presented, and examples of their use are reviewed. These include the classic retrospective method, another retrospective approach, and accomplishments books used by selected research-sponsoring organizations. (SLD)

Focus group findings were compared with survey findings for three studies in which both methods were used. Studies conducted on voluntary sterilization in Guatemala, Honduras, and Zaire with over 2,000 subjects confirm that focus groups yield information similar to that obtained from surveys and are useful in program planning. (SLD)

Articles in this special issue deal with the assessment of the impact of research and are divided into segments concerning semiquantitative approaches; qualitative approaches; and quantitative and fiscal approaches. These articles illustrate the importance of the role of motivation and associated incentives. (SLD)