动力分析用于检测SEM中的许多项目的不合适:解决未被识别的问题,将旧方法与新方法联系起来,并将动力分析方法与数据分析方法"匹配"
1Vanderbilt University.
Psychological methods
|December 12, 2024
概括
研究人员必须将功率分析方法与结构方程建模 (SEM) 数据分析保持一致,以避免功率差异,特别是在复杂模型中. 不匹配的方法可以导致预期与获得的统计能力差异很大.
科学领域:
- 心理测量 心理测量 心理测量
- 统计建模 统计建模
- 量化心理学 量化心理学
背景情况:
- 有四种不同的功率分析方法用于测试结构方程模型 (SEM) 的整体适应性.
- 通常使用的方法可以产生显著不同的结果,特别是对于具有许多参数 (高p) 的模型.
- 现有的文献往往过于简化了蒙特卡洛方法,只区分了两个主要方法.
研究的目的:
- 澄清和关联SEM的四种现有和新提议的功率分析方法.
- 突出了先验功率分析方法与随后的SEM数据分析策略相匹配的关键需求.
- 解决SEM研究中常见的功率分析和数据分析方法之间的不匹配问题.
主要方法:
- 四种功率分析方法的分类和比较:理论的零/替代 (方法1),蒙特卡洛与理论的零 (方法2),蒙特卡洛与实证的零 (方法3),和蒙特卡洛与调整的实证的零 (方法4).
- 在四种方法的高参数条件下,实证证明不同功率的结果.
- 解释如何调整功率分析和数据分析阶段,包括软件提供.
主要成果:
- 四种功率分析方法可以产生差异很大的功率估计,特别是在高参数的SEM中.
- 在最常用的先验功率分析方法和最常用的SEM数据分析方法之间存在显著的不匹配,用于整体适应性测试.
- 这种不匹配导致预期和实际统计能力之间的差异.
结论:
- 研究人员必须仔细选择并将其功率分析策略与其SEM数据分析计划相匹配,以确保准确的功率估计.
- 如果不能调整这些阶段,可能会导致误导性结论,这是由于统计数据的膨胀或缩.
- 该研究提供了指导和工具,以促进适当的匹配,以便进行强大的SEM研究.
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