This book explores challenges posed by the use of DNA evidence to the traditional features, procedures and principles of the criminal trial. It examines the limitations of existing theories of criminal trial processes in the face of increasing use of scientific evidence in the court room. The research elucidates the interconnections at trial of three epistemologies, namely legal reasoning, as represented by counsel and trial judge, common sense manifested by the jury and scientific reasoning expounded by the expert witness. Sallavaci argues that while scientific reasoning is part of this hybrid of trial languages and practices, its extended use is producing specifically novel tensions which impact on the traditional criminal trial landscape. Through the lens of DNA evidence, the book investigates how far the use of scientific evidence in the fact finding process poses challenges for the adversarial character of the proceedings and rules of evidence; how it affects the role of the judge, jury and expert witness, as well as the principle of orality and continuity of the trial. In comparing the challenges faced in English common law trials to those of the USA, this book has international scope, and will be of great use and interest to students and researchers of Criminal Law and Practice, Policing, and the role of Forensics in Law.

In 1992 the National Research Council issued DNA Technology in Forensic Science, a book that documented the state of the art in this emerging field. Recently, this volume was brought to worldwide attention in the murder trial of celebrity O. J. Simpson. The Evaluation of Forensic DNA Evidence reports on developments in population genetics and statistics since the original volume was published. The committee comments on statements in the original book that proved controversial or that have been misapplied in the courts. This volume offers recommendations for handling DNA samples, performing calculations, and other aspects of using DNA as a forensic toolâ€"modifying some recommendations presented in the 1992 volume. The update addresses two major areas: Determination of DNA profiles. The committee considers how laboratory errors (particularly false matches) can arise, how errors might be reduced, and how to take into account the fact that the error rate can never be reduced to zero. Interpretation of a finding that the DNA profile of a suspect or victim matches the evidence DNA. The committee addresses controversies in population genetics, exploring the problems that arise from the mixture of groups and subgroups in the American population and how this substructure can be accounted for in calculating frequencies. This volume examines statistical issues in interpreting frequencies as probabilities, including adjustments when a suspect is found through a database search. The committee includes a detailed discussion of what its recommendations would mean in the courtroom, with numerous case citations. By resolving several remaining issues in the evaluation of this increasingly important area of forensic evidence, this technical update will be important to forensic scientists and population geneticistsâ€"and helpful to attorneys, judges, and others who need to understand DNA and the law. Anyone working in laboratories and in the courts or anyone studying this issue should own this book.

Scores of talented and dedicated people serve the forensic science community, performing vitally important work. However, they are often constrained by lack of adequate resources, sound policies, and national support. It is clear that change and advancements, both systematic and scientific, are needed in a number of forensic science disciplines to ensure the reliability of work, establish enforceable standards, and promote best practices with consistent application. Strengthening Forensic Science in the United States: A Path Forward provides a detailed plan for addressing these needs and suggests the creation of a new government entity, the National Institute of Forensic Science, to establish and enforce standards within the forensic science community. The benefits of improving and regulating the forensic science disciplines are clear: assisting law enforcement officials, enhancing homeland security, and reducing the risk of wrongful conviction and exoneration. Strengthening Forensic Science in the United States gives a full account of what is needed to advance the forensic science disciplines, including upgrading of systems and organizational structures, better training, widespread adoption of uniform and enforceable best practices, and mandatory certification and accreditation programs. While this book provides an essential call-to-action for congress and policy makers, it also serves as a vital tool for law enforcement agencies, criminal prosecutors and attorneys, and forensic science educators.

Focusing on issues raised at Interpol‘s 14th Forensic Science Symposium, this volume offers a complete overview and analysis of the scientific and legal aspects of each of the forensic disciplines. It updates cases and discusses recent applications of Frye/Daubert, the admissibility of eyewitness identification, the explosion of cases and statutes addressing post-conviction DNA, the rise in attention to cold cases, and other challenges. This is the book that those in the forensic sciences need to have on hand to successfully prepare for what may await them in the courtroom.

Shelton describes the startling questions that have arisen about the reliability of many forms of scientific evidence which were traditionally regarded as reliable and have been routinely admitted to prove guilt. The exonerations resulting from the development of DNA have exposed the lack of truswortiness of much of the "scientific" evidence that was used to convict people who turned out to be innocent. The Congressionally commissioned report of the National Academy of Sciences documented the lack of scientific basis in many of these areas. Nevertheless, Shelton discloses that many courts continue to routinely admit such evidence in criminal cases, in spite of the obligation of judges to be the "gatekeepers" of forensic science evidence. He explores reasons for that phenomenon and describes whether and how it might change in the future.

Looks at the investigative process of five murder cases, including the O.J. Simpson case and the Woodchipper case, detailing how the forensic evidence was used at trial, and how it was used to exonerate or convict the killers.