Social science in supreme court death penalty cases: Citation practices and their implications

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Abstract
This study examines the use of evidence based on social science research in Supreme Court capital punishment cases decided between 1963 and 1985. These years mark the beginning of the Court's modern decisions regarding the death penalty and extend to the approximate midpoint in this body of jurisprudence. The frequency and the major correlates of social science research citations in the Supreme Court's death penalty cases are described, and these findings are contrasted with the justices' use of social science evidence in other types of criminal cases. The justices have used social science materials relatively often in capital punishment cases, although it does not necessarily follow that social science findings have been important to the decision of these cases. The results of this research are discussed, along with other issues relevant to the judicial use of research evidence based on social science.