在公平和有偏见的阵容中估计目击者错误率
Ryan J Fitzgerald1, Colin G Tredoux2, Stefana Juncu3
1Department of Psychology, Simon Fraser University.
Law and human behavior
|July 20, 2023
概括
有效大小校正更好地估计了阵容中的错误识别,通过对可信的成员进行核算. 这种方法准确地反映了排队偏见如何增加对无辜嫌疑人的虚假识别.
科学领域:
- 法医心理学 法医心理学
- 目击者鉴定程序 目击者鉴定程序
- 刑事司法研究 刑事司法研究
背景情况:
- 估计队伍中错误识别风险对于法律准确性至关重要.
- 目前的方法,如名义大小校正,可能无法完全考虑阵容组成.
- 排队偏见可以显著影响目击证人的证词的可靠性.
研究的目的:
- 为了比较名义大小校正与新型有效大小校正,以估计错误识别风险.
- 调查排队偏见对错误识别无辜嫌疑人的影响.
- 为了确定不同的校正方法是如何受到阵容偏差的影响.
主要方法:
- 重新分析了 10 个现有数据集,并进行了 3 个新实验,共有 2,622 名参与者.
- 参与者观看了上演的犯罪,并完成了公平或有偏见的阵容.
- 基于名义大小与实际大小的错误率纠正的比较.
主要成果:
- 增加阵容偏差显著增加了对无辜嫌疑人的错误识别 (OR = 5.50).
- 有效大小修正反映了错误识别的增加 (OR = 3.04).
- 标称大小调整未能考虑阵容偏差对错误识别估计的影响 (OR = 0.84).
结论:
- 有效尺寸校正对阵容偏差比名义尺寸校正更敏感.
- 有效大小校正提供了一个更准确的估计无辜的嫌疑人错误识别风险.
- 为了准确的风险评估,必须考虑阵容组成,包括可信和不可信的成员.
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