EFFECTS OF “CHRONIC” AND “CURRENT” LATERALIZED AND NON-LATERALIZED CEREBRAL LESIONS UPON TRAIL MAKING TEST PERFORMANCES

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Abstract
The Trail Making Test and Wechsler-Bellevue Intelligence Scale (Form I) were administered to six groups of brain-damaged Ss. Three groups consisted of patients with lateralized and non-lateralized cerebral lesions of relatively recent onset, and three groups consisted of patients with long-standing, chronic, lateralized and non-lateralized cerebral lesions. Earlier findings of differential effects of lateralized lesions upon Trail Making Test scores were supported by the results for the groups with recent onset of brain damage. Only slight trends toward differential impairment were found for the groups with long-standing lateralized lesions. The variables relating to recent or chronic aspects of cerebral lesions were concluded to be of importance in influencing the effects of lateralized lesions upon psychological test performances.

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