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The relationship between intellectual ability and adult performance on the Trail Making Test and the Symbol Digit
B W Waldmann1, A L Dickson, M C Monahan
1Department of Psychology, University of Southern Mississippi, Hattiesburg 39406-8236.
Journal of Clinical Psychology
|May 1, 1992
Abstract:
Subjects between the ages of 18 and 30 were divided in groups based on their Satz-Mogel Wechsler Adult Intelligence Scale-Revised Full Scale IQs: (a) Borderline (70 to 79); (b) Low Average (80 to 89); (c) Average (90 to 109); (d) High Average (110 to 119); (e) Superior (120 to 129). Each subject was administered the Trail Making Test (Forms A and B) and the written version of the Symbol Digit Modalities Test. A significant effect for IQ emerged. The low ability subjects were, in the main, significantly different from the higher ability subjects. No gender differences were found.