Abstract
The major purpose of this study is to assess the conditions under which single scoring for constructed-response (CR) items is as effective as double scoring in the licensure testing context. We used both empirical datasets of five mixed-format licensure tests collected in actual operational settings and simulated datasets that allowed for the manipulation of two psychometric conditions, namely the proportion of CR components in a test and the magnitudes of correlations between two raters. In general, examinees were classified into the same Pass/Fail category when the contribution of the CR component was low and the interrater correlation was substantial. Under these conditions, the use of single scoring would reduce scoring time and cost without increasing classification inconsistency.
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