01090nas a2200133   4500008004100000245007800041210006900119300001200188490000700200520059200207653003400799100002300833856010000856       1999                        eng d00aMultidimensional adaptive testing with a minimum error-variance criterion0 aMultidimensional adaptive testing with a minimum errorvariance c  a398-4120 v243 aAdaptive 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. 10acomputerized adaptive testing1 avan der Linden, WJ  uhttp://www.iacat.org/content/multidimensional-adaptive-testing-minimum-error-variance-criterion