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In applying the adaptive testing equipped with the item response theory to actual cases, it is crucial to know the appropriate number of question items suffice for the specified accuracy. In almost all the systems we have developed so far, we adopt small number of items in a sequence of questions for adaptive testing because too many questions will bore examinees or force to give up completing the...
The item response theory (IRT) gives us valuable information about the difficulties of items as well as the abilities of examinees. Adaptive testing using the IRT provides the most appropriate items to examinees automatically. However, the item parameters remain the same even if the features of the examinees and the number of examinees change. We propose to use the dually adaptive online IRT testing...
The item response theory (IRT) provides us not only the abilities of examinees but also the difficulties of items. Adaptive testing using the IRT selects the most appropriate items to examinees automatically, resulting in more accurate ability estimation and more efficient test procedures than the conventional testing. However, the item parameters remain constants even if the features of the examinees...
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