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首页> 外文期刊>Journal of applied measurement >A Rasch Analysis of the KeyMath-3 Diagnostic Assessment
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A Rasch Analysis of the KeyMath-3 Diagnostic Assessment

机译：KeyMath-3诊断评估的Rasch分析

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摘要

Effectively assessing children's academic development can help school professionals make placement decisions and prepare appropriate instructional supports. The KeyMath-3 Diagnostic Assessment (Connolly, 2008) is a widely used assessment of children's mathematical abilities; however, despite much use, the measurement properties of the KeyMath-3 DA have not been examined, aside from the development and standardization phases. The current study conducted a Rasch analysis of the Basic Concepts content area of the KeyMath-3 DA in a diverse sample of 308 young children to assess the quality of the assessment. Rasch analytic procedures examined unidimensionality, item and person fit statistics, reliability, and item hierarchy. Misfitting items were further examined, and response patterns were modified. In general, results show that the Basic Concepts sub-scale is a good measure of the underlying construct of young children's understanding of the basic concepts in mathematics. Implications are discussed.
机译：有效评估儿童的学业发展可以帮助学校专业人士做出安置决定并准备适当的指导性支持。 KeyMath-3诊断评估（Connolly，2008年）是对儿童数学能力的广泛使用的评估；但是，尽管有很多用途，但除了开发和标准化阶段外，KeyMath-3 DA的测量特性尚未得到检验。当前的研究在308个幼儿的不同样本中对KeyMath-3 DA的基本概念内容区域进行了Rasch分析，以评估评估的质量。 Rasch分析程序检查了单维性，项目和人员适合度统计信息，可靠性和项目层次结构。对不合身项目进行了进一步检查，并修改了响应方式。总体而言，结果表明，基本概念量表可以很好地衡量幼儿对数学基本概念的理解的基础结构。讨论了含义。

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