Assembling Tests for the Measurement of Multiple Traits

For the measurement of multiple traits, this paper pro poses assembling tests based on the targets for the (as ymptotic) variance functions of the estimators of each of the traits. A linear programming model is presented that can be used to computerize the assembly process. Several cases of test assembly dealing with multidimensional traits are distinguished, and versions of the model appli cable to each of these cases are discussed. An empirical example of a test assembly problem from a two-dimen sional mathematics item pool is provided.