Forensic science evidence and expert witness testimony play an increasingly prominent role in modern criminal proceedings. Science produces powerful evidence of criminal offending, but has also courted controversy and sometimes contributed towards miscarriages of justice. The twenty-six articles and essays reproduced in this volume explore the theoretical foundations of modern scientific proof and critically consider the practical issues to which expert evidence gives rise in contemporary criminal trials. The essays are prefaced by a substantial new introduction which provides an overview and incisive commentary contextualising the key debates. The volume begins by placingforensic science in interdisciplinary focus, with contributions from historical, sociological, Science and Technology Studies (STS), philosophical and jurisprudential perspectives. This is followed by closer examination of the role of forensic science and other expert evidence in criminal proceedings, exposing enduring tensions and addressing recent controversies in the relationship between science and criminal law. A third set of contributions considers the practical challenges of interpreting and communicating forensic science evidence. This perennial battle continues to be fought at the intersection between the logic of scientific inference and the psychology of the fact-finder‘scommon sense reasoning. Finally, the volume‘s fourth group of essays evaluates the (limited) success of existing procedural reforms aimed at improving the reception of expert testimony in criminal adjudication, and considers future prospects for institutional renewal - with a keen eye to comparative law models and experiences, success stories and cautionary tales.

This project addressed the admissibility of expert evidence in criminal proceedings in England and Wales. Currently, too much expert opinion evidence is admitted without adequate scrutiny because no clear test is being applied to determine whether the evidence is sufficiently reliable to be admitted. Juries may therefore be reaching conclusions on the basis of unreliable evidence, as confirmed by a number of miscarriages of justice in recent years. Following consultation on a discussion paper (LCCP 190, 2009, ISDBN 9780118404655) the Commission recommends that there should be a new reliability-based admissibility test for expert evidence in criminal proceedings. The test would not need to be applied routinely or unnecessarily, but it would be applied in appropriate cases and it would result in the exclusion of unreliable expert opinion evidence. Under the test, expert opinion evidence would not be admitted unless it was adjudged to be sufficiently reliable to go before a jury. The draft Criminal Evidence (Experts) Bill published with the report (as Appendix A) sets out the admissibility test and also provides the guidance judges would need when applying the test, setting out the key reasons why an expert's opinion evidence might be unreliable. The Bill also codifies (with slight modifications) the uncontroversial aspects of the present law, so that all the admissibility requirements for expert evidence would be set out in a single Act of Parliament and carry equal authority.

As an increasing range of expert evidence becomes available to it, the criminal justice system must answer a series of challenging questions: should experts be permitted to give evidence on the credibility of witnesses? How should statistical evidence be presented to juries? What relevancedoes syndrome evidence have to questions of criminal responsibility? In `Expert Evidence and Criminal Justice', Mike Redmayne explores these issues. His exposition utilizes work in a number of disciplines, and draws comparisons with the law and procedure in several different jurisdictions. Whiledeveloping a general overview of the use of scientific evidence in the criminal process, Redmayne makes use of detailed examinations of particular issues, such as battered women syndrome, fingerprinting, and eyewitness expertise. Through an analysis of expert evidence, he also invites reflection ona series of wider issues, among them the function of exclusionary rules and the nature of case construction.

Forensic science evidence and expert witness testimony play an increasingly prominent role in modern criminal proceedings. Science produces powerful evidence of criminal offending, but has also courted controversy and sometimes contributed towards miscarriages of justice. The twenty-six articles and essays reproduced in this volume explore the theoretical foundations of modern scientific proof and critically consider the practical issues to which expert evidence gives rise in contemporary criminal trials. The essays are prefaced by a substantial new introduction which provides an overview and incisive commentary contextualising the key debates. The volume begins by placingforensic science in interdisciplinary focus, with contributions from historical, sociological, Science and Technology Studies (STS), philosophical and jurisprudential perspectives. This is followed by closer examination of the role of forensic science and other expert evidence in criminal proceedings, exposing enduring tensions and addressing recent controversies in the relationship between science and criminal law. A third set of contributions considers the practical challenges of interpreting and communicating forensic science evidence. This perennial battle continues to be fought at the intersection between the logic of scientific inference and the psychology of the fact-finder‘scommon sense reasoning. Finally, the volume‘s fourth group of essays evaluates the (limited) success of existing procedural reforms aimed at improving the reception of expert testimony in criminal adjudication, and considers future prospects for institutional renewal - with a keen eye to comparative law models and experiences, success stories and cautionary tales.

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.