Historique
Périodique
Current and former marijuana use: preliminary findings of a longitudinal study of effects on IQ in young adults
(Usage -actuel ou passé- de marijuana : premiers résultats d'une étude longitudinale sur les effets du cannabis sur le QI, chez de jeunes adultes)
Auteur(s) :
FRIED, P. ;
WATKINSON B. ;
JAMES, D. ;
GRAY, R.
Année :
2002
Page(s) :
887-891
Langue(s) :
Français
Refs biblio. :
34
Domaine :
Drogues illicites / Illicit drugs
Discipline :
PRO (Produits, mode d'action, méthode de dépistage / Substances, action mode, screening methods)
Thésaurus mots-clés
CANNABIS
;
ETUDE LONGITUDINALE
;
EFFET SECONDAIRE
;
ADOLESCENT
;
JEUNE ADULTE
;
USAGE REGULIER
;
EX-USAGER
;
COGNITION
Thésaurus géographique
CANADA
Note générale :
Canadian Medical Association Journal, 2002, 166, (7), 887-891
Note de contenu :
tabl.
Résumé :
ENGLISH :
Background: Assessing marijuana's impact on intelligence quotient (IQ) has been hampered by a lack of evaluation of subjects before they begin to use this substance. Using data from a group of young people whom we have been following since birth, we examined IQ scores before, during and after cessation of regular marijuana use to determine any impact of the drug on this measure of cognitive function. Methods: We determined marijuana use for seventy 17- to 20-year-olds through self-reporting and urinalysis. IQ difference scores were calculated by subtracting each person's IQ score at 9-12 years (before initiation of drug use) from his or her score at 17-20 years. We then compared the difference in IQ scores of current heavy users (at least 5 joints per week), current light users (less than 5 joints per week), former users (who had not smoked regularly for at least 3 months) and non-users (who never smoked more than once per week and no smoking in the past two weeks). Results: Current marijuana use was significantly correlated (p
Affiliation :
Dept Psychol., Carleton Univ., 1125 Colonel By Drive, Ottawa ON K1S 5B6
Canada. Canada.
Canada. Canada.
Cote :
A01769