The effect of guessing on item reliability under answer-until-correct scoring
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The effect of guessing on item reliability under answer-until-correct scoring
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1978
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Abstract
The answer-until-correct (AUC) procedure requires
that examinees respond to a multiple-choice
item until they answer it correctly. The examinee’s
score on the item is then based on the number of
responses required for the item. It was expected
that the additional responses obtained under the
AUC procedure would improve reliability by providing
additional information on those examinees
who fail to choose the correct alternative on their
first attempt. However, when compared to the zero-one
(ZO) scoring procedure, the AUC procedure
has failed to yield consistent improvements in reliability.
Using a modified version of Horst’s model
for examinee behavior, this paper compares the effect
of guessing on item reliability for the AUC procedure
and the ZO procedure. The analysis shows
that the relative efficiency of the two procedures depends
strongly on the nature of the item alternatives
and implies that the appropriate criteria for
item selection are different for each procedure.
Conflicting results reported for empirical comparisons
of the reliabilities of the two procedures may
result from a failure to control for the characteristics
of the items.
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Kane, Michael & Moloney, James. (1978). The effect of guessing on item reliability under answer-until-correct scoring. Applied Psychological Measurement, 2, 41-49. doi:10.1177/014662167800200104
Suggested citation
Kane, Michael T.; Moloney, James. (1978). The effect of guessing on item reliability under answer-until-correct scoring. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/99065.
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