The difficulty of test items that measure more than one ability
1985
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The difficulty of test items that measure more than one ability
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1985
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Many test items require more than one ability to
obtain a correct response. This article proposes a multidimensional
index of item difficulty that can be used
with items of this type. The proposed index describes
multidimensional item difficulty as the direction in the
multidimensional space in which the item provides the
most information and the distance in that direction to
the most informative point. The multidimensional difficulty
is derived for a particular item response theory
model and an example of its application is given using
the ACT Mathematics Usage Test.
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Reckase, Mark D. (1985). The difficulty of test items that measure more than one ability. Applied Psychological Measurement, 9, 401-412. doi:10.1177/014662168500900409
Suggested citation
Reckase, Mark D.. (1985). The difficulty of test items that measure more than one ability. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/102195.
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