This series addresses important developments in the criminal justice system. It encompasses topics both within and outside of the accepted core of research on crime and justice, including legal, psychological, biological, sociological, historical and ethical considerations.Individual essays in volume 20 include articles by Michael Tonry and Mary Lynch on intermediate sanctions; Thomas J. Bernard and Jeffrey B. Snipes on theoretical integration in criminology; Antony Duff on recent work in the philosophy of punishment; Eugene Maguin and Rolf Loeber on academic performance and delinquency; Thomas M. Mieczkowski on the measurement of drug prevalence in the United States; and Ellen G. Cohn and David P. Farrington on crime and justice in the criminal justice and criminology literature.