常见人的设计在分数等级:蒙特卡洛调查
Jiayi Liu1, Zhehan Jiang1,2, Tianpeng Zheng1,2
1Peking University, Beijing, China.
Educational and psychological measurement
|November 3, 2025
概括
常见人 (CP) 等同提供了高安全性测试的好处. 至少有30个CP,样品特征对准确度的影响最小,使得难度等测试因素转移为等同精度的主要关注点.
科学领域:
- 心理测量 心理测量 心理测量
- 教育测量教育的测量
- 统计建模 统计建模
背景情况:
- 普通人 (CP) 等同为高安全性测试提供了优势,通过减轻点项目风险和适应非等价组.
- 关于CP特征如何影响等值准确性的研究有限,实施准则很少.
研究的目的:
- 系统地检查CP特征和测试设计因素对等准确度的影响.
- 提供基于证据的指导方针,用于在高风险的测试环境中实施CP等级.
主要方法:
- 一个全面的蒙特卡洛模拟,每个表格有5000名考生和500个复制.
- 操纵8个因素,包括测试长度,难度转移,能力分散和测试形式之间的相关性.
- 使用规范化的RMSE和%Bias.比较四种等同方法 (身份,IRT真得分,线性,等效)
主要成果:
- 至少30个CP的CP样本大小将样本属性的对等准确性的影响降到最低.
- 测试难度的变化显著降低了IRT精度,而较长的测试和更广泛的能力分散提高了精度.
- 当测试形式不同时,线性和等效等效方法显示出优越的稳定性.
结论:
- 至少有30个CP覆盖得分范围是足以准确等同.
- 测试因素,特别是难度转移,是等同准确性的关键决定因素.
- 该研究提供了一个框架,用于平衡使用CP设计的高风险等级中的安全性和准确性.
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