Russell G. Almond|Robert J. Mislevy
GRAPHICAL MODELS AND COMPUTERIZED ADAPTIVE TESTING
Educational Testing Service|Educational Testing Service
abstract paper synthesizes ideas fields graphical modeling educational testing particularly item response theory irt applied computerized adaptive testing cat graphical modeling offer irt language describing multifaceted skills knowledge disentangling evidence complex performances irtcat offer graphical modelers several ways treating sources variability including variables model particular variables enter modeling process five levels 1 validity studies ordinarily used model 2 task construction particular defining link parameters 3 test model assembly blocking randomization constraints selecting tasks model pieces 4 response characterization part task models characterize response 5 main student model graduate record examinations gre used illustrate ideas context irtcat extensions discussed context language proficiency testing