In order to investigate the effects of vocational training on labor force participation and unemployment, the researchers compared an experimental group of Tennessee Area Vocational-Technical School (AVTS) graduates with an individually matched control group. On the basis of data collected by questionnaire, the report concluded that vocationally trained workers have higher mean labor force participation rates, lower mean unemployment rates, and higher mean occupational mobility rates. However, the researchers warn that some of this difference might be attributable to unmeasurable motivational or achievement factors. Close matching with the control group can reduce, but not eliminate, this hazard. (BH)