Book excerpt: The study is the first evaluation of a major ongoing national program that uses the classical experimental design of random assignment, measuring "what would have happened" by comparing people who entered Job Training Partnership Act (JTPA) programs with those who didn't. After background information on JTPA, chapters look at benefit-cost analyses; enrollment; program impacts on target groups; impacts on the earnings of subgroups; and policy implications of the findings. Distributed by University Press of America. Annotation copyright by Book News, Inc., Portland, OR