This collection of studies by experts on drug abuse treatment represents the state of the art in research examining what works best and why in a nationwide effort to improve and expand treatment to counteract the epidemic use of cocaine and the spread of AIDS. Investigators at the National Institute on Drug Abuse describe 15 projects that test intervention strategies to improve client recruitment, retention, performance, and treatment outcomes in a range of community-based programs relating to different populations, treatment settings, and research designs addressing real world issues. The...