%0 Journal Article %J Applied Psychological Measurement %D 2010 %T A Comparison of Item Selection Techniques for Testlets %A Murphy, Daniel L. %A Dodd, Barbara G. %A Vaughn, Brandon K. %X

This study examined the performance of the maximum Fisher’s information, the maximum posterior weighted information, and the minimum expected posterior variance methods for selecting items in a computerized adaptive testing system when the items were grouped in testlets. A simulation study compared the efficiency of ability estimation among the item selection techniques under varying conditions of local-item dependency when the response model was either the three-parameter-logistic item response theory or the three-parameter-logistic testlet response theory. The item selection techniques performed similarly within any particular condition, the practical implications of which are discussed within the article.

%B Applied Psychological Measurement %V 34 %P 424-437 %U http://apm.sagepub.com/content/34/6/424.abstract %R 10.1177/0146621609349804