College of Psychology: Faculty Articles

Title

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

Document Type

Article

Publication Date

1994

Publication Title

Journal of Child and Adolescent Substance Abuse

ISSN

1067-828X

Volume

3

Issue/No.

1

Abstract

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.

DOI

10.1300/J029v03n01_05

Peer Reviewed

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