Rc. Damato et al., COMPARING VERBAL AND NONVERBAL INTELLECTUAL-FUNCTIONING WITH THE TONIAND WISC-R, Perceptual and motor skills, 78(2), 1994, pp. 701-702
Cognitive ability has long been conceptualized as having verbal and no
nverbal components. In this study scores on the Test of Nonverbal Inte
lligence were correlated with those on the Wechsler Intelligence Scale
for Children-Revised for 74 subjects 6 to 15 years old which yielded
Pearson values of .55 between the Verbal Scale standard scores and the
nonverbal test and .58 with the Performance Scale standard scores and
TONI intelligence quotients. Although the TONI has been presented as
a nonverbal instrument, the correlations did not support such a view.