DORA NEVARES is Professor of Law at Inter-American University in Hato-Rey, Puerto Rico. She has published four books in Puerto Rico, and various journal articles in the United States and Puerto Rico.

MARVIN E. WOLFGANG is a Professor of Criminology and Law at the University of Pennsylvania. He is the author of the books From Boy to Man and Delinquency in a Birth Cohort, as well as numerous articles and reviews.

PAUL E. TRACY is Associate Professor of Criminal Justice at Northeastern University in Massachusetts. He has numerous publications to his credit, has been an expert witness at many trials, and he is a member of several professional organizations relating to crime, delinquency, and sociology.

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