The construct validity of the 16PF Reasoning Ability Scale was tested against the Wechsler Adult Intelligence Scale–Revised (WAIS–R) with 60 undergraduate students. Moderate correlations were obtained between scores on the reasoning scale and the WAIS–R Full Scale, Verbal Scale, and Performance Scale (.57, .44, .51, respectively). The strongest correlations between scores on the reasoning scale and WAIS–R subtests were obtained for Information and Block Design. These data indicate modest support for the validity of the 16PF Reasoning Ability Scale as a measure of intelligence.
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