%0 Journal Article %J Journal of Educational and Behavioral Statistics %D 1999 %T Multidimensional adaptive testing with a minimum error-variance criterion %A van der Linden, W. J. %K computerized adaptive testing %X Adaptive testing under a multidimensional logistic response model is addressed. An algorithm is proposed that minimizes the (asymptotic) variance of the maximum-likelihood estimator of a linear combination of abilities of interest. The criterion results in a closed-form expression that is easy to evaluate. In addition, it is shown how the algorithm can be modified if the interest is in a test with a "simple ability structure". The statistical properties of the adaptive ML estimator are demonstrated for a two-dimensional item pool with several linear combinations of the abilities. %B Journal of Educational and Behavioral Statistics %V 24 %P 398-412 %G eng %M EJ607470