In this manual, an attempt is made to demonstrate how certain social science measurements can be adapted to help field workers in economic and community development assess initial conditions before a project is begun, to measure the extent to which various attempts at producing social change have succeeded, to determine the overall result of social development schemes, and to identify factors important in influencing the success of programs of social change. Broad stages in the evaluation process included describing the development project and specifying its goals, deciding what data to use to indicate project results, collecting data before, during, and after a project, and analyzing and interpreting the findings. The document includes tables and charts, 71 references, and an appendix on statistical concepts and elementary interviewing procedures. (ly)