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An investigation into the impact of screen design on computer-based assessments

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Haigh, Matt 


This article reports on part of a study that investigated the impact of item format on the difficulty of test items. Two parallel forms of a computer-based test were developed; each test consisted of 15 items based on the GCSE Science curriculum. Five items were identical in both forms of the test to act as a control. The remaining items were modified in the parallel forms to investigate the effect of manipulating ten aspects of item format, including, for example, drag and drop categorisation vs. tick-box categorisation; and static graphic vs. animated graphic. The outcomes indicated that there was little effect on quantitative measures of item difficulty when the item format was changed.



Online assessment, Assessment design, Computer-based assessment

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Research Matters

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Research Division, Cambridge University Press & Assessment

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