The Double Helix and the Law of Evidence
David H. Kaye
The Pennsylvania State University Dickinson School of Law
January 1, 2010
Penn State Legal Studies Research Paper No. 9-2010
This book chronicles the discoveries that led to modern DNA evidence and analyzes how courts in the United States came to accept this evidence in criminal cases. It shows how the adversary system exacerbated divisions among scientists, how lawyers and experts obfuscated some issues and clarified others, how probability and statistics were manipulated and misunderstood, and how the need to convince lay judges influenced the scientific research. It uses probability theory to clarify legal concepts of relevance and probative value as they apply to DNA and other forensic-science evidence, and it reflects on the lessons DNA evidence holds for forensic science and the legal system.
Keywords: DNA, evidence, probability, likelihood, forensic scienceAccepted Paper Series
Date posted: November 19, 2010
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