The Project on Secondary Analysis directed its attention to methodology and policy issues, focusing on reanalysis of existing data (1979-82)--surveys, program evaluations, etc.--as a vehicle for learning how to improve methods of obtaining and analyzing data, designing program evaluations, and constructing policy to enhance the quality and utility of statistical data. This document contains: (1) an executive summary, (2) an introduction, (3) a summary of project products and their uses, (4) the third year report and abstracts (1981-82), (5) the second year report and abstracts (1980-81), (6) a reference list of journal articles and books, and (7) appendices including reprints of illustrative articles. (PN)