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Neuropsychological Effects of Chronic Cannabis Use on the Memory and Intelligence of Adolescents

By Cheryl Millsaps, Richard L. Azrin and Wiley Mittenberg


Fifteen marijuana-dependent adolescent abusers (mean age = 16.9 years) were administered the full Wechsler Memory Scale-Revised and Wechsler Adult Intelligence Scale-Revised. Subjects had no history of other substance or alcohol abuse or dependence, cerebral trauma, psychiatric or nerological disorders. They had been abstinent form marijuana for an average of 27 days, and the majority of them were given urine tests to verify their abstenence. Comparisons among intelligence and memory indices revealed serveral significant findings that are consistent with the pattern produced by cerebral dysfunction. Specifically, memory indices were significantly reduced in relation to both intellectual function and attentional ability. In contrast, intelligence was in the normal range and unchanged relative to the estimated premorbid level. This profile is a characteristic finding in patients who are recovering form chronic impairment of memory function

Topics: Psychology
Publisher: 'The Haworth Press'
Year: 1994
DOI identifier: 10.1300/J029v03n01_05
OAI identifier:
Provided by: NSU Works
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