解释概率比率的意义是否会提高普通人的理解?
William C Thompson1, Rebecca Hofstein Grady1, Geoffrey Stewart Morrison2
1Department of Criminology, Law, & Society, University of California, Irvine, Irvine, CA, USA.
在视频证词中解释概率比率 (LRs) 略有改善了非专业人士的理解,但并没有减少检察官的谬误. 需要进一步的研究来确定有效的方法来提高对LRs的理解.
科学领域:
- 认知心理学 认知心理学
- 法律决策 - 法律决策
- 统计学推理 统计学推理
背景情况:
- 之前关于非专业人士对概率比率 (LRs) 的理解的研究往往缺乏明确的解释.
- 大多数研究使用书面形式,与典型的法庭口头证词不同.
研究的目的:
- 调查专家证人对LR的解释对非专业人士理解的影响.
- 评估视频证词和解释是否减少了检察官的谬论.
主要方法:
- 参与者观看了视频证词,有些人从专家证人那里得到了LR的解释.
- 有效的LRs (后期赔率/前期赔率) 与呈现的LRs进行了比较.
- 分析了检察官错误的发生率.
主要成果:
- 当提供解释时,观察到精确LR理解的小幅增加.
- 这种解释并没有显著减少检察官错误的发生.
- 总的来说,结果没有提供令人信服的证据证明LR理解能力有所改善.
结论:
- 虽然解释可能提供边际益处,但它们不足以确保对概率比率的准确理解.
- 除了解释的清晰度之外的因素可能会影响理解和谬误的发生.
- 进一步研究有效的教学策略对LRs是有必要的.
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