Introduction to Statistics for Forensic Scientists

Author: David Lucy
Publisher: John Wiley & Sons
ISBN: 9781118700105
Release Date: 2013-05-03
Genre: Medical

Introduction to Statistics for Forensic Scientists is an essential introduction to the subject, gently guiding the reader through the key statistical techniques used to evaluate various types of forensic evidence. Assuming only a modest mathematical background, the book uses real-life examples from the forensic science literature and forensic case-work to illustrate relevant statistical concepts and methods. Opening with a brief overview of the history and use of statistics within forensic science, the text then goes on to introduce statistical techniques commonly used to examine data obtained during laboratory experiments. There is a strong emphasis on the evaluation of scientific observation as evidence and modern Bayesian approaches to interpreting forensic data for the courts. The analysis of key forms of evidence are discussed throughout with a particular focus on DNA, fibres and glass. An invaluable introduction to the statistical interpretation of forensic evidence; this book will be invaluable for all undergraduates taking courses in forensic science. Introduction to the key statistical techniques used in the evaluation of forensic evidence Includes end of chapter exercises to enhance student understanding Numerous examples taken from forensic science to put the subject into context

Introduction to Statistics for Forensic Scientists

Author: David Lucy
Publisher: Wiley
ISBN: 0470022019
Release Date: 2005-12-16
Genre: Medical

Introduction to Statistics for Forensic Scientists is an essential introduction to the subject, gently guiding the reader through the key statistical techniques used to evaluate various types of forensic evidence. Assuming only a modest mathematical background, the book uses real-life examples from the forensic science literature and forensic case-work to illustrate relevant statistical concepts and methods. Opening with a brief overview of the history and use of statistics within forensic science, the text then goes on to introduce statistical techniques commonly used to examine data obtained during laboratory experiments. There is a strong emphasis on the evaluation of scientific observation as evidence and modern Bayesian approaches to interpreting forensic data for the courts. The analysis of key forms of evidence are discussed throughout with a particular focus on DNA, fibres and glass. An invaluable introduction to the statistical interpretation of forensic evidence; this book will be invaluable for all undergraduates taking courses in forensic science. Introduction to the key statistical techniques used in the evaluation of forensic evidence Includes end of chapter exercises to enhance student understanding Numerous examples taken from forensic science to put the subject into context

Statistics and the Evaluation of Evidence for Forensic Scientists

Author: C. G. G. Aitken
Publisher: John Wiley & Sons
ISBN: 0470843675
Release Date: 2004-08-13
Genre: Mathematics

The use of statistical and probabilistic ideas in forensic scienceis of increasing importance to the administration of justice. Thisis exemplified by their role in the evaluation and interpretationof trace evidence, such as glass, fibres and DNA. They allow theforensic scientist to evaluate and interpret evidence where thereis an element of uncertainty. For many years, Statistics and the Evaluation of Evidence forForensic Scientists has been considered the leading text in thestatistical evaluation of forensic evidence. It is highly regardedamongst forensic scientists. This new edition is fully updated,covering many new topics of interest, and includes coverage of newfields of evidence. It features new examples concerned withup-to-date data sets, and a chapter on evidence evaluation usingBayesian nets. Provides a comprehensive introduction to the statisticalevaluation of forensic evidence. Features new material on glass interpretation, fibresinterpretation and Bayesian nets. Includes new material on the analysis of multi variate data,useful, for example, in problems involving elemental or chemicalcompositions. Illustrated throughout with examples using real up-to-datedata. Assumes only a modest mathematical background. Includes a foreword by Dennis Lindley. The clarity of exposition makes this book ideal for all forensicscientists, lawyers and other professionals in related fieldsinterested in the quantitative assessment and evaluation offorensic evidence. It is also suitable for graduate studentsstudying courses in the statistical evaluation of evidence. 'There can be no doubt that the appreciation of some evidencein a court of law has been greatly enhanced by the sound use ofstatistical ideas and one can be confident that the next decadewill see further developments, during which time this book willadmirably serve those who have cause to use statistics in forensicscience.' D.V. Lindley

Introduction to Data Analysis with R for Forensic Scientists

Author: James Michael Curran
Publisher: CRC Press
ISBN: 1420088270
Release Date: 2010-07-30
Genre: Law

Statistical methods provide a logical, coherent framework in which data from experimental science can be analyzed. However, many researchers lack the statistical skills or resources that would allow them to explore their data to its full potential. Introduction to Data Analysis with R for Forensic Sciences minimizes theory and mathematics and focuses on the application and practice of statistics to provide researchers with the dexterity necessary to systematically analyze data discovered from the fruits of their research. Using traditional techniques and employing examples and tutorials with real data collected from experiments, this book presents the following critical information necessary for researchers: A refresher on basic statistics and an introduction to R Considerations and techniques for the visual display of data through graphics An overview of statistical hypothesis tests and the reasoning behind them A comprehensive guide to the use of the linear model, the foundation of most statistics encountered An introduction to extensions to the linear model for commonly encountered scenarios, including logistic and Poisson regression Instruction on how to plan and design experiments in a way that minimizes cost and maximizes the chances of finding differences that may exist Focusing on forensic examples but useful for anyone working in a laboratory, this volume enables researchers to get the most out of their experiments by allowing them to cogently analyze the data they have collected, saving valuable time and effort.

Forensic Science A Very Short Introduction

Author: Jim Fraser
Publisher: OUP Oxford
ISBN: 9780191609664
Release Date: 2010-02-25
Genre: Science

Forensic science is a subject of wide fascination. What happens at a crime scene? How does DNA profiling work? How can it help solve crimes that happened 20 years ago? In forensic science, a criminal case can often hinge on a piece of evidence such as a hair, a blood trace, half a footprint, or a tyre mark. High profile cases such as the Stephen Lawrence enquiry and the Madeleine McCann case have attracted enormous media attention and enhanced this interest in recent years. However, the public understanding of forensic science is poor, and largely based on TV shows such as CSI: Crime Scene Investigation, which exploit high-tech imagery for dramatic effect. Forensic science is a complex activity at the interface of science and law. However, it also deals with real life issues and its results are interpreted within unique situations. Complex scientific findings must be considered carefully, dispassionately, and communicated with clarity, simplicity, and precision. In this Very Short Introduction, Jim Fraser introduces the concept of forensic science and explains how it is used in the investigation of crime. He begins at the crime scene itself, explaining the principles and processes of crime scene management. He explores how forensic scientists work; from the reconstruction of events to laboratory examinations. He considers the techniques they use, such as fingerprinting, and goes on to highlight the immense impact DNA profiling has had. Providing examples from forensic science cases in the UK, US, and other countries, he considers the techniques and challenges faced around the world. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.

An Introduction to Forensic Genetics

Author: William Goodwin
Publisher: John Wiley & Sons
ISBN: 9780470010259
Release Date: 2007-11-27
Genre: Science

An Introduction to Forensic Genetics is a comprehensive introduction to this fast moving area from the collection of evidence at the scene of a crime to the presentation of that evidence in a legal context. The last few years have seen significant advances in the subject and the development and application of genetics has revolutionised forensic science. This book begins with the key concepts needed to fully appreciate the subject and moves on to examine the latest developments in the field, illustrated throughout with references to relevant casework. In addition to the technology involved in generating a DNA profile, the underlying population biology and statistical interpretation are also covered. The evaluation and presentation of DNA evidence in court is discussed as well with guidance on the evaluation process and how court reports and statements should be presented. An accessible introduction to Forensic Genetics from the collection of evidence to the presentation of that evidence in a legal context Includes case studies to enhance student understanding Includes the latest developments in the field focusing on the technology used today and that which is likely to be used in the future Accessible treatment of population biology and statistics associated with forensic evidence This book offers undergraduate students of Forensic Science an accessible approach to the subject that will have direct relevance to their courses. An Introduction to Forensic Genetics is also an invaluable resource for postgraduates and practising forensic scientists looking for a good introduction to the field.

Bayesian Networks for Probabilistic Inference and Decision Analysis in Forensic Science

Author: Franco Taroni
Publisher: John Wiley & Sons
ISBN: 9781118914748
Release Date: 2014-07-21
Genre: Mathematics

"This book should have a place on the bookshelf of every forensic scientist who cares about the science of evidence interpretation" Dr. Ian Evett, Principal Forensic Services Ltd, London, UK Continuing developments in science and technology mean that the amounts of information forensic scientists are able to provide for criminal investigations is ever increasing. The commensurate increase in complexity creates difficulties for scientists and lawyers with regard to evaluation and interpretation, notably with respect to issues of inference and decision. Probability theory, implemented through graphical methods, and specifically Bayesian networks, provides powerful methods to deal with this complexity. Extensions of these methods to elements of decision theory provide further support and assistance to the judicial system. Bayesian Networks for Probabilistic Inference and Decision Analysis in Forensic Science provides a unique and comprehensive introduction to the use of Bayesian decision networks for the evaluation and interpretation of scientific findings in forensic science, and for the support of decision-makers in their scientific and legal tasks. • Includes self-contained introductions to probability and decision theory. • Develops the characteristics of Bayesian networks, object-oriented Bayesian networks and their extension to decision models. • Features implementation of the methodology with reference to commercial and academically available software. • Presents standard networks and their extensions that can be easily implemented and that can assist in the reader’s own analysis of real cases. • Provides a technique for structuring problems and organizing data based on methods and principles of scientific reasoning. • Contains a method for the construction of coherent and defensible arguments for the analysis and evaluation of scientific findings and for decisions based on them. • Is written in a lucid style, suitable for forensic scientists and lawyers with minimal mathematical background. • Includes a foreword by Ian Evett. The clear and accessible style of this second edition makes this book ideal for all forensic scientists, applied statisticians and graduate students wishing to evaluate forensic findings from the perspective of probability and decision analysis. It will also appeal to lawyers and other scientists and professionals interested in the evaluation and interpretation of forensic findings, including decision making based on scientific information.

DNA Technology in Forensic Science

Author: Committee on DNA Technology in Forensic Science
Publisher: National Academies Press
ISBN: 9780309045872
Release Date: 1992-01-01
Genre: Science

Matching DNA samples from crime scenes and suspects is rapidly becoming a key source of evidence for use in our justice system. DNA Technology in Forensic Science offers recommendations for resolving crucial questions that are emerging as DNA typing becomes more widespread. The volume addreses key issues: Quality and reliability in DNA typing, including the introduction of new technologies, problems of standardization, and approaches to certification. DNA typing in the courtroom, including issues of population genetics, levels of understanding among judges and juries, and admissibility. Societal issues, such as privacy of DNA data, storage of samples and data, and the rights of defendants to quality testing technology. Combining this original volume with the new update--The Evaluation of Forensic DNA Evidence--provides the complete, up-to-date picture of this highly important and visible topic. This volume offers important guidance to anyone working with this emerging law enforcement tool: policymakers, specialists in criminal law, forensic scientists, geneticists, researchers, faculty, and students.

Forensic Science Under Siege

Author: Kelly Pyrek
Publisher: Elsevier
ISBN: 0080471072
Release Date: 2010-07-27
Genre: Law

Forensic science laboratories' reputations have increasingly come under fire. Incidents of tainted evidence, false reports, allegations of negligence, scientifically flawed testimony, or - worse yet - perjury in in-court testimony, have all served to cast a shadow over the forensic sciences. Instances of each are just a few of the quality-related charges made in the last few years. Forensic Science Under Siege is the first book to integrate and explain these problematic trends in forensic science. The issues are timely, and are approached from an investigatory, yet scholarly and research-driven, perspective. Leading experts are consulted and interviewed, including directors of highly visible forensic laboratories, as well as medical examiners and coroners who are commandeering the discussions related to these issues. Interviewees include Henry Lee, Richard Saferstein, Cyril Wecht, and many others. The ultimate consequences of all these pressures, as well as the future of forensic science, has yet to be determined. This book examines these challenges, while also exploring possible solutions (such as the formation of a forensic science consortium to address specific legislative issues). It is a must-read for all forensic scientists. Provides insight on the current state of forensic science, demands, and future direction as provided by leading experts in the field Consolidates the current state of standards and best-practices of labs across disciplines Discusses a controversial topic that must be addressed for political support and financial funding of forensic science to improve

Strengthening Forensic Science in the United States

Author: National Research Council
Publisher: National Academies Press
ISBN: 9780309142397
Release Date: 2009-07-29
Genre: Law

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.

Essential Mathematics and Statistics for Forensic Science

Author: Craig Adam
Publisher: John Wiley & Sons
ISBN: 9781119964186
Release Date: 2011-09-20
Genre: Medical

This text is an accessible, student-friendly introduction to the wide range of mathematical and statistical tools needed by the forensic scientist in the analysis, interpretation and presentation of experimental measurements. From a basis of high school mathematics, the book develops essential quantitative analysis techniques within the context of a broad range of forensic applications. This clearly structured text focuses on developing core mathematical skills together with an understanding of the calculations associated with the analysis of experimental work, including an emphasis on the use of graphs and the evaluation of uncertainties. Through a broad study of probability and statistics, the reader is led ultimately to the use of Bayesian approaches to the evaluation of evidence within the court. In every section, forensic applications such as ballistics trajectories, post-mortem cooling, aspects of forensic pharmacokinetics, the matching of glass evidence, the formation of bloodstains and the interpretation of DNA profiles are discussed and examples of calculations are worked through. In every chapter there are numerous self-assessment problems to aid student learning. Its broad scope and forensically focused coverage make this book an essential text for students embarking on any degree course in forensic science or forensic analysis, as well as an invaluable reference for post-graduate students and forensic professionals. Key features: Offers a unique mix of mathematics and statistics topics, specifically tailored to a forensic science undergraduate degree. All topics illustrated with examples from the forensic science discipline. Written in an accessible, student-friendly way to engage interest and enhance learning and confidence. Assumes only a basic high-school level prior mathematical knowledge.

Relationship Inference with Familias and R

Author: Thore Egeland
Publisher: Academic Press
ISBN: 9780128026267
Release Date: 2015-12-24
Genre: Law

Relationship Inference in Familias and R discusses the use of Familias and R software to understand genetic kinship of two or more DNA samples. This software is commonly used for forensic cases to establish paternity, identify victims or analyze genetic evidence at crime scenes when kinship is involved. The book explores utilizing Familias software and R packages for difficult situations including inbred families, mutations and missing data from degraded DNA. The book additionally addresses identification following mass disasters, familial searching, non-autosomal marker analysis and relationship inference using linked markers. The second part of the book focuses on more statistical issues such as estimation and uncertainty of model parameters. Although written for use with human DNA, the principles can be applied to non-human genetics for animal pedigrees and/or analysis of plants for agriculture purposes. The book contains necessary tools to evaluate any type of forensic case where kinship is an issue. This volume focuses on the core material and omits most general background material on probability, statistics and forensic genetics Each chapter includes exercises with available solutions The web page familias.name contains supporting material

Interpreting DNA Evidence

Author: Ian Evett
Publisher: Sinauer Associates Incorporated
ISBN: 0878931554
Release Date: 1998-01-01
Genre: Medical

Interpretation of DNA profile matches depends on the use of statistical weights. This text provides the background information in statistics and genetics for the reader to arrive at these weights.

The Evaluation of Forensic DNA Evidence

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309134404
Release Date: 1996-12-12
Genre: Science

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 tool--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 geneticists--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.

Irrefutable Evidence

Author: Michael Kurland
Publisher: Ivan R. Dee
ISBN: 9781461662396
Release Date: 2009-10-16
Genre: Science

The rise of scientific thinking in finding, catching, and convicting criminals—and, just as important, freeing the innocent—has transformed society's assault on crime. Before scientific detective work, early attempts to maintain public safety relied on the severity of punishment rather than any probability of apprehension. But with the rapid development of the sciences in the nineteenth century, some techniques began to spill over into more effective police work. Michael Kurland's engrossing history of forensic science recounts this remarkable progress, which continues to the present. He traces the history of the major techniques of criminal detection and many of the minor ones. Here are Bertillon's physical measurements used to recognize habitual criminals; the study of fingerprints identifying criminals long after they have left the scene of the crime; Gravelle's comparison microscope comparing bullets to determine if they have been fired from the same gun; the development of bloodstain identification and, ultimately, the blood type involved. Mr. Kurland explains how once–accepted techniques have fallen by the wayside—handwriting analysis, for example—and how methods such as lie detectors, voice spectrum analysis, bite mark evidence, and other methods have proven unworthy. Finally Irrefutable Evidence explores the rise of modern DNA typing techniques, which have proven the innocence of many persons convicted of major crimes and resulted in the exoneration of more than two hundred on death row. With 12 black–and–white illustrations.