This paper is an examination of how autoregressive earnings models commonly used to evaluate job-training programs can produce badly biased estimates of both the magnitude and the temporal pattern of program impacts. Ashenfelter's results are used to illustrate this point, and a new, more...

This paper examines the benefits and costs of Job Training Partnership Act (JTPA) Title II-A programs for economically disadvantaged adults and out-of-school youths. It is based on a 21,000-person randomized experiment conducted within ongoing Title II-A programs at 16 local JTPA Service...