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观察者在评分人口亲和关系的宏观光学特征时出现的错误模式.
Leandi Liebenberg1, Kyra E Stull1,2, Ericka N L'Abbé1
1Forensic Anthropology Research Centre, University of Pretoria, Pretoria, South Africa.
Journal of forensic sciences
|May 8, 2025
概括
具体方法培训提高了对人口亲和关系研究的宏观光学 (MMS) 属性评分的可靠性. 熟悉特征和程序,而不仅仅是一般经验,可以提高观察者的共识.
科学领域:
- 法医人类学 法医人类学
- 生物学人类学 生物学人类学
- 生物信息学是一种生物信息学.
背景情况:
- 方法修订对于识别科学方法中的局限性和偏见至关重要,以确保可靠的结果.
- 非度量方法的主观性质引发了人们对特征评分变化及其对生物参数分类的影响的担忧.
- 了解宏观光学特征评分中的观察者变异性对于准确的种群亲和度评估至关重要.
研究的目的:
- 调查观察者经验,方法熟悉度和统计方法对骨宏观特征重复性的影响.
- 评估观察者因素对使用骨特征对人口亲和关系分类可靠性的影响.
主要方法:
- 在10个头骨上,有17个宏观光学特征被五位具有不同经验水平的观察员在10个头骨上得分.
- 观察者内部和观察者间的协议是使用kappa统计数据计算的.
- 进行了一次小组讨论,随后进行了重组,以评估在协议中的改进.
主要成果:
- 观察者内部的一致性从中等到完美不等;下鼻边缘,鼻骨形状和鼻子过度生长显示出最低的一致性.
- 观察者间的重复性从不良到实质性的协议,在程序澄清后观察到轻微的改善.
- 熟悉特定的特征和评分程序对一致性产生了积极的影响,比一般的观察者经验更重要.
结论:
- 方法特定的培训对于在人口研究中一致应用宏观光学特征至关重要.
- 统计方法的选择,包括像科恩的卡帕这样的权重方法,显著影响感知特征可靠性.
- 实践人员必须选择适合每个特性的数据类型的统计测试,以确保准确的可靠性评估.
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