The Wechsler Adult Intelligence Scale, Otis Mental Ability Test, Advanced Progressive Matrices, Revised Beta Examination, the D 48 Test, and the Minnesota Paper Form Board were administered to 131 college students to determine the intercorrelarions among nonverbal and verbal tests of intelligence. The obtained cocfficients were corrected for restriction of range on the WAIS 1Qs. Between Progressive Matrices and the WAIS Full Scale IQ s = .74 and for the Matrices and the Otis IQ r = .75. The other nonverbal resrs showed a low to moderate relationship with the IQ scores.The increased interest in maximizing the utilization of human resources has stimulated development and evaluarion of psychological rests which have potential for the impartial measurement of intellectual and vocational aptimdes. Specific nonverbal rests of cognitive functioning, such as the Advanced Progressive Matrices and the D 48 Test have been posmlated as being reletively unaffected by educational experience and enable a more impartial assessment of intellectual functioning than verbal tests of intelligence (Raven, 1965; Gough & Domino, 1963).The purpose of this repo:t is to present the intercorrelations of scores on two verbal tests of intelligence, Wechsler Adult Intelligence Scale (WAIS) and Otis Mental Ability Test, Gamma AM (Otis), and nonverbal intelligence tests, Advanced Progressive Matrices (Matrices), Revised Beta Examination (Beta), D 48 Test ( D 4 8 ) , and the Minnesota Paper Form Board, Series MA (Minnesota). Although the Minnesota is characterized as a test of spatial relations, it has been shown to have a moderare relationship with the Otis 1Q (McLaurin & Farrar, 1973 ) .The tests were administered under standard procedures to 131 students (100 females and 31 males) who volunteered to participate in an extensive program for the evaluation of a battery of performance rests for vocational selection.The sample was believed to be homogeneous relative to the general population due to the normal selection processes for college students. This homogeneity would tend to depress the magnitude of the relationships among the tests. To obtain a more precise estimate of expected relationships in the general population, the obtained correlation coefficients were corrected for the rescricrion of range (Guilford, 1956, pp. 320-321). The correction was based upon the WAIS IQs, using an SD of 15 (Wechsler, 1955). The results of the correlational analyses are shown in Table 1.The magnitude of n of the WAIS IQs corresponded to those obtained by Wechsler (1955) in his normative study. The correlations of the Otis IQ with the WAJS scores were within the expected range for valid verbal testr of intelligence. The Matrices correlated significantly higher with the WAIS Full Scale, WAIS Verbal and Otis IQs than the other nonverbal tests (rs > 2.03, df = 128, p < .05). The moderate correlation of the Matrices with the WAIS Performance IQ did not differ significantly from those of the other nonverbal tests exccpt the D 48 ( t = 1.85, df = 128, P < .05). N ...
