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Nine factor analytic studies of deaf children and adolescents are reviewed and summarized in this paper. First, the distinction between comparative and correlation studies is clarified; the two methodological approaches are seen to be complementary. Psychological assessment of deaf persons is discussed under two categories: nonverbal—nonlanguage abilities and language and communication abilities. The summaries of the factorial investigations include information regarding the composition of the sample, the variables analyzed, the statistical techniques employed, and the results obtained. The nine factor analytic studies of young deaf persons unanimously support the conclusion that language skills are independent of nonverbal intelligence. The validity of the conclusion is further enhanced by four considerations: (a) the age span of the research samples, (b) the international scope of the studies, (c) the variety of measures used, and (d) the similarity of statistical methodology employed. Factorial design, and educational and theoretical implications of the conclusion reached, are discussed.