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标题：Conditioning factors of test-taking engagement in PIAAC: an exploratory IRT modelling approach considering person and item characteristics
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作者：Frank Goldhammer ; Thomas Martens ; Oliver Lüdtke 等
期刊名称：Large-scale Assessments in Education
电子版ISSN：2196-0739
出版年度：2017
卷号：5
期号：1
页码：1-25
DOI：10.1186/s40536-017-0051-9
摘要：Background: A potential problem of low-stakes large-scale assessments such as the Programme for the International Assessment of Adult Competencies (PIAAC) is low test-taking engagement. The present study pursued two goals in order to better understand conditioning factors of test-taking disengagement: First, a model-based approach was used to investigate whether item indicators of disengagement constitute a continuous latent person variable by domain. Second, the efects of person and item characteristics were jointly tested using explanatory item response models. Methods: Analyses were based on the Canadian sample of Round 1 of the PIAAC, with N = 26,683 participants completing test items in the domains of literacy, numeracy, and problem solving. Binary item disengagement indicators were created by means of item response time thresholds. Results: The results showed that disengagement indicators defne a latent dimension by domain. Disengagement increased with lower educational attainment, lower cognitive skills, and when the test language was not the participant’s native language. Gender did not exert any efect on disengagement, while age had a positive efect for problem solving only. An item’s location in the second of two assessment modules was positively related to disengagement, as was item difculty. The latter efect was negatively moderated by cognitive skill, suggesting that poor test-takers are especially likely to disengage with more difcult items. Conclusions: The negative efect of cognitive skill, the positive efect of item difculty, and their negative interaction efect support the assumption that disengagement is the outcome of individual expectations about success (informed disengagement).
关键词：Test-taking disengagement; Response time threshold; Explanatory item response modelling; Person efects; Item efects