Forensic Testimony: Science, Law and Expert Evidence by C. Michael Bowers

By C. Michael Bowers

Forensic Testimony: technology, legislation and specialist Evidence―favored with an Honorable point out in legislations & felony stories on the organization of yank Publishers' 2015 PROSE Awards―provides a transparent and intuitive dialogue of the criminal presentation of specialist testimony. The e-book delves into the results, methods, and battles that take place within the presentation of opinion and clinical proof through court-accepted forensic specialists. It presents a well timed evaluate of the us Federal ideas of facts (FRE) relating to specialist testimony, and incorporates a multi-disciplinary examine the strengths and weaknesses in forensic technology court docket testimony. The statutes and the results of judicial makes use of (or non-use) of the FRE, Daubert, Kumho, and the 2009 NAS file on Forensic technological know-how also are incorporated. The presentation expands to review case legislation, felony critiques, and stories at the reliability and pitfalls of forensic services within the US court docket method. This ebook is a vital reference for an individual getting ready to offer professional testimony of forensic evidence.

  • Honorable point out within the 2015 PROSE Awards in legislation & criminal experiences from the organization of yankee Publishers
  • A multi-disciplinary forensic reference reading the strengths and weaknesses of forensic technological know-how in court docket testimony
  • Focuses on forensic testimony and judicial judgements in gentle of the Federal principles of proof, case interpretations, and the NAS document findings
  • Case reports, a few from the Innocence undertaking, support the reader in distinguishing strong testimony from bad

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Comparison of the microscopic characteristics of questioned hairs to known hair samples helps determine whether a transfer may have occurred (Deedrick, 2000). 2 The problem of unreliability and another failure to make public disclosures by the justice department The overreaching of hair examiners was established in a nine-year study of misconduct at the FBI crime lab. It found forensic flaws in hair analysis, but the results of the probe that ended in 2004 were revealed only to prosecutors. html#.

Unfortunately, Justice Blackmun and his fellow Justices’ use of reliable in this manner is not consistent with definitions of the term as understood by scientists. Consider a speedometer whose needle always reads 5 miles per hour faster than the actual speed you are traveling; that speedometer is 100% reliable, because it always gives the same reading in the same circumstances. Reliability in a strictly scientific sense refers to the consistency of results in any given test. Many forensic areas pass muster in this respect, such as polygraphy: the results of one examiner’s test generally agree with another examiner’s test.

7 The Flawed FBI Dictum on Hair Investigation: Circa 2000 Hair Evidence Hairs, which are composed primarily of the protein keratin, can be defined as slender outgrowths of the skin of mammals. Each species of animal possesses hair with characteristic length, color, shape, root appearance, and internal microscopic features that distinguish one animal from another. Considerable variability also exists in the types of hairs that are found on the body of an animal. In humans, hairs found on the head, pubic region, arms, legs, and other body areas have characteristics that can determine their origin.

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