Accounting for Dropouts in Evaluations of Social Experiments
NBER Technical Working Paper No. 166
This paper considers the statistical and economic justification for one widely-used method of adjusting data from social experiments to account for dropping-out behavior due to Bloom (1984). We generalize the method to apply to distributions not just means, and present tests of the key identifying assumption in this context. A reanalysis of the National JTPA experiment base vindicates application of Bloom's method in this context.
Published: Review of Economics and Statistics, Vol. 80, no. 1 (1998): 1-14.