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Crime Labs Need Improvement

机译：犯罪实验室需要改进

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In their examination of the criminal convictions of 62 men who were later exonerated by DNA evidence, Barry Scheck, Peter Neufeld, and Jim Dwyer concluded that a third of the cases involved "tainted or fraudulent science." Although in some cases rogue experts were directly to blame, a much larger problem exists: The forensics profession lacks a truly scientific culture―one with sufficient written protocols and an empirical basis for the most basic procedures. This results in an environment in which misconduct can too easily thrive. Stated another way, forensic science needs more science. On an individual level, one of the most notorious cases involved Fred Zain, the chief serologist of the West Virginia State Police Crime Laboratory. A judicial report found that Zain committed many acts of misconduct over 10 years, including overstating the strength of results, reporting inconclusive results as conclusive, repeatedly altering laboratory records, grouping results to create the erroneous impression that genetic markers had been obtained from all samples tested, and failing to report conflicting results. In reviewing the report, the West Virginia Supreme Court spoke of "shocking and egregious violations" and the "corruption of our legal system."
机译：在对后来被DNA证据免除的62名男子的刑事定罪进行审查时，Barry Scheck，Peter Neufeld和Jim Dwyer得出结论，其中三分之一的案件涉及“受污染或欺诈性的科学”。尽管在某些情况下直接归咎于流氓专家，但仍然存在一个更大的问题：法医行业缺乏一种真正的科学文化-一种具有足够的书面协议和最基本程序的经验基础的文化。这导致不当行为很容易滋生的环境。换句话说，法医学需要更多的科学。就个人而言，最臭名昭著的案件之一是西弗吉尼亚州警察犯罪实验室首席血清学家弗雷德·扎恩（Fred Zain）。一份司法报告发现Zain在10年内犯下了许多不当行为，包括夸大结果的强度，将结论性的结果报告为结论性的，反复更改实验室记录，将结果分组以产生错误的印象，即已从所有测试样品中获得了遗传标记，并且无法报告有冲突的结果。西弗吉尼亚最高法院在审查该报告时谈到“令人震惊和严重的侵犯”和“我们法律制度的腐败”。

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