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首页> 外文期刊>Ageing Research >Multiple, correlated covariates associated with differential item functioning (DIF): Accounting for language DIF when education levels differ across languages
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Multiple, correlated covariates associated with differential item functioning (DIF): Accounting for language DIF when education levels differ across languages

机译：与差异项功能（DIF）相关的多个相关协变量：跨语言的教育水平不同时说明语言DIF

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Differential item functioning (DIF) occurs when a test item has different statistical properties in subgroups, controlling for the underlying ability measured by the test. DIF assessment is necessary when evaluating measurement bias in tests used across different language groups. However, other factors such as educational attainment can differ across language groups, and DIF due to these other factors may also exist. How to conduct DIF analyses in the presence of multiple, correlated factors remains largely unexplored. This study assessed DIF related to Spanish versus English language in a 44-item object naming test. Data come from a community-based sample of 1,755 Spanish- and English-speaking older adults. We compared simultaneous accounting, a new strategy for handling differences in educational attainment across language groups, with existing methods. Compared to other methods, simultaneously accounting for language- and education-related DIF yielded salient differences in some object naming scores, particularly for Spanish speakers with at least 9 years of education. Accounting for factors that vary across language groups can be important when assessing language DIF. The use of simultaneous accounting will be relevant to other cross-cultural studies in cognition and in other fields, including health-related quality of life.
机译：当测试项目在子组中具有不同的统计特性时，就会发生差异项目功能（DIF），从而控制测试所测得的基础能力。在跨不同语言组的测试中评估测量偏差时，必须进行DIF评估。但是，其他因素（例如受教育程度）在不同语言组之间可能会有所不同，并且由于这些其他因素而导致的DIF也可能存在。在存在多个相关因素的情况下，如何进行DIF分析仍需进一步研究。这项研究在一项44项对象命名测试中评估了与西班牙语和英语相关的DIF。数据来自基于社区的1755名讲西班牙语和英语的老年人。我们将同步记账与现有方法进行了比较，同步记账是一种处理跨语言组教育水平差异的新策略。与其他方法相比，同时考虑与语言和教育相关的DIF在某些对象命名分数上产生了显着差异，尤其是对于受过9年以上教育的西班牙语使用者。在评估语言DIF时，考虑因语言组而异的因素可能很重要。同时记账的使用将与认知和其他领域的其他跨文化研究相关，包括与健康相关的生活质量。

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