Abstract
The practice of individual assessment has been moving toward the empirically derived Cattell–Horn–Carroll (CHC) theory of intellectual ability, which offers a hierarchical taxonomy of cognitive abilities. Current assessment tools provide varying adherence to operationalizing CHC theory, making clinical inference difficult. Expert consensus explicating the factors of contemporary tests has proven to be valuable by showing the promise of using a multifactorial assessment of intellectual abilities. The Weiss et al. (2013) articles in this special issue represent the next evolution of this approach by providing empirical research detailing the test factors of the popular Wechsler tests, so that practitioners using those tests can base their clinical inferences on an evidence-based understanding of their measurement tools.
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