The informative value of mini surveys (surveys of samples of 20 to 80 respondents) is described and illustrated. The declining marginal utility of each additional respondent makes mini surveys efficient. They give a rough idea of the population parameters and can lead to the rejection of...

We examine lJ.S. Agency for International Development project designs as described in pre-project design documents arid compare them using document review protocols to project outcomes as described in project impact evaluation reports for 40 projects. From this we draw three major conclusions...