For 106 retarded persons correlations between WAIS IQs and IQs for combined forms of the Quick Test were .68 (Verbal scale), .40 (Performance scale), and .64 (Full scale), which values are similar to previously reported ones of Methvin. The QT assesses reliably (.83) functional language ability.
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References
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AmmonsR. B.AmmonsC. H.The Quick Test (QT): provisional manual. Missoula, Mont.: Psychological Test Specialists, 1962.
2.
MethvinM.Quick Test performances of mentally retarded individuals. Amer. J. Ment. Defic., 1964, 68, 540–542.
