The proper role, if any, of capital punishment in our criminal justice system is an issue of unparalleled discussion in professional literature. Over one thousand books, articles, and reports on one or more aspects of the death penalty question have appeared since the turn of the century. In addition, the death penalty debate is not confined solely to professional circles; it occupies a prominent role in the popular press, media, and periodicals. In fact, the literature is so voluminous and the moral, legal, ethical, and empirical issues involved are so diverse and complex, that even the most recognized contemporary authorities on capital punishment readily acknowledge the limitations of their knowledge and understanding.1 The death penalty issue that is the focus of the greatest discussion and polarization both in professional and lay literature is the question of deterrence: does capital punishment deter crime, and most notably, murder? More properly and practically stated, does capital punishment provide a more effective general deterrent to murder than alternative legal sanctions such as imprisonment? Social scientists-most notably sociologists and criminologistshave played a long and active role in addressing this question empirically, with all studies up until the mid-1970's rejecting the deterrence hypothesis for capital punishment. For example, over five decades of research in this country failed to show higher murder rates in abolition than death penalty states, an increase in the murder rate after some states abolished capital punishment, or a decrease in murder after some
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