法医检查人员对子弹比较决定的准确性和可重复性
R Austin Hicklin1, Connie L Parks1, Kensley M Dunagan1
1Noblis, Inc, USA.
Forensic science international
|November 15, 2024
概括
法医枪支检查人员的法医枪支检查人员.
科学领域:
- 法医科学 法医科学 法医科学
- 枪支检查 枪支检查 枪支检查
- 弹道学 弹道学 弹道学
背景情况:
- 枪支检查人员对子弹进行比较对于刑事司法系统至关重要.
- 关于这些比较的准确性和可重复性的研究是有限的,特别是在损坏或质疑的子弹.
- 弹药类型对决策率的影响 (例如,外套式空心弹头与全金属外套) 尚未得到充分研究.
研究的目的:
- 评估由执业的法医枪支检查人员做出的子弹比较决策的准确性和可重复性.
- 在比较损坏的子弹,质疑的子弹和不同类型的弹药时评估决策准确性.
- 确定各种因素 (子弹质量,步枪类型,弹药,枪支型号) 对比结果的影响.
主要方法:
- 49名执业的法医枪支检查员进行了3156次子弹比较.
- 包括不同质量的子弹,不同类型的弹药,以及各种枪支制造/型号的子弹.
- 评估了被询问-被询问 (QQ) 和已知被询问 (KQ) 的比较场景.
主要成果:
- 不确定的响应率与子弹质量有反向关系.
- 多角引手枪比常规引手枪产生了更不确定的/不合适的反应.
- 在比较同一枪支不同类型的弹药时,错误的排除率很高.
结论:
- 根据子弹质量,步枪类型,弹药和枪支型号,决策率有很大差异.
- 参与者的变化也影响了决策率.
- 由于这些影响因素,不应使用总体决策率来总结研究结果.
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