Before citizen participation in administrative decision-making can be evaluated in a way that is both rigorous and relevant to policy development, there must be some minimal consensus among evaluators and policy-makers concerning the types of questions that should be asked and the methodologies that should be used. This document consists of edited versions of 10 papers addressing the development of adequate methods and models for such evaluations. The papers were originally presented at a national symposium on citizen participation held in Washington, D.C. in February, 1980. The first four papers discuss the views of public officials and citizen leaders on the need for evaluation studies and on the types of information that would be most useful to obtain. The next two papers review existing evaluation research, including that on the quality of participation processes and techniques and that on the impact of these processes on decision-making. The last four chapters examine the views of federal program managers on the utilization of evaluation studies in designing citizen participation processes. (Author/PGD)