获得稳定的动态适应指数截止值的最佳复制次数.
1Arizona State University, Tempe, USA.
Educational and psychological measurement
|November 18, 2024
概括
研究人员可以在因子分析中使用较少的模拟复制来获得动态适合指数 (DFI) 切断值. 这项蒙特卡洛研究发现,200次复制提供了稳定的切断点,以最小的影响减少了计算时间.
科学领域:
- 行为科学 行为科学
- 心理测量 心理测量 心理测量
- 统计建模 统计建模
背景情况:
- 在行为科学中,因子分析对于测量潜在结构至关重要.
- 适合性指数用于模型适合性和有效性证据.
- 基于模拟的方法提供定制的切断值,但计算密集.
研究的目的:
- 为了确定稳定的动态适合指数 (DFI) 截止值的最佳模拟复制次数.
- 为了评估计算效率和切断稳定性之间的权衡.
- 为基于模拟的方法提供指导,用于因素分析模型的合适性.
主要方法:
- 进行了一项蒙特卡洛模拟研究.
- 该研究的重点是动态适合指数 (DFI) 的切断.
- 模拟复制的次数是不同的,以评估稳定性.
主要成果:
- 动态适合指数 (DFI) 的切断点在500次复制时稳定.
- 较少的复制,特别是200个,对于分类数据和更简单的模型 (一因素,三因素) 是有效的.
- 减少复制大大缩短了计算时间,对结果的影响最小.
结论:
- 动态适合指数 (DFI) 方法可以比以前认为的更高的计算效率.
- 在常见的因子分析模型中,200次复制通常足以实现稳定的DFI截止值.
- 研究人员可以通过使用更少的复制来平衡计算效率和统计严谨性.
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