概括
心理学中的复制危机往往导致对小效应的期望. 然而,像Mahalanobis D这样的多变量效应大小揭示了从多个小效应中显著的群体差异,提供了更完整的画面.
科学领域:
- 心理学 心理学 心理学
- 统计 统计 统计 统计
背景情况:
- 心理学中的复制危机导致了心理研究中小到中等效应大小的预期.
- 当前效应大小计算通常集中在单个变量上,可能低估了真正的群体差异.
研究的目的:
- 调查多变量效果大小在揭示更大的群体差异方面的实用性.
- 使用Mahalanobis D.重新分析现有的多变量数据集.
主要方法:
- 从比较 synaesthetes 和对照的研究中重新分析了多变量数据集.
- 雇佣了Mahalanobis D,这是科恩d的多变量扩展,以评估群体差异.
主要成果:
- 马哈拉诺比斯D证明,跨多个变量的一组小到中等效应可以导致非常大的整体群体差异.
- 这种方法突显了群体之间的潜在低估的心理区别.
结论:
- 多变量效应大小提供了比单变量方法更全面的心理差异测量方法.
- 通过采用多变量统计方法,可以减轻心理学研究中对效应大小的低估.
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