{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T05:10:11Z","timestamp":1777525811879,"version":"3.51.4"},"reference-count":18,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[1987,5,1]],"date-time":"1987-05-01T00:00:00Z","timestamp":546825600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clin Pediatr (Phila)"],"published-print":{"date-parts":[[1987,5]]},"abstract":"<jats:p>In 1985 approximately 120,000 American high school seniors smoked marijuana daily. We interviewed 35 middle-class, cannabis-dependent adolescents with a mean age of 16 years who were patients in a drug treatment program. The patients also completed a lengthy self-assessment questionnaire designed to elicit information on drug-related problems. Our results show that family harmony, school attendance, and school achievement deteriorated once these young people began to use marijuana at least 4 days a week. The following behaviors were noted: remaining away from home without permission or parental knowledge for at least 7 consecutive days (29%), a D or F grade average on the last report card before they entered the drug treatment program (43%), involvement in a motor vehicle accident when the driver was under the influence of marijuana (26%), suicide attempts (20%), and convincing a \"marijuana-naive\" younger sibling to smoke the drug (20%). Despite such seemingly apparent signs of possible drug use by these 35 adolescents, a mean time of 12 months elapsed before parents suspected their children of marijuana abuse. In many cases mental health professionals consulted by a number of the children when they were using drugs were likewise unaware of the marijuana abuse.<\/jats:p>","DOI":"10.1177\/000992288702600511","type":"journal-article","created":{"date-parts":[[2007,11,26]],"date-time":"2007-11-26T17:50:16Z","timestamp":1196099416000},"page":"264-270","source":"Crossref","is-referenced-by-count":21,"title":["Behavioral, Psychosocial, and Academic Correlates of Marijuana Usage in Adolescence"],"prefix":"10.1177","volume":"26","author":[{"given":"Richard H.","family":"Schwartz","sequence":"first","affiliation":[{"name":"Department of Pediatrics, Georgetown University School of Medicine, Washington, DC, Department of Pediatrics, Fairfax Hospital, Falls Church, Virginia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Norman G.","family":"Hoffmann","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, University of Minnesota and the Chemical Abuse\/Addiction Treatment Outcome Registry (CATOR), St. Paul, Minnesota"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard","family":"Jones","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, Georgetown University School of Medicine, Washington, DC"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1987,5,1]]},"reference":[{"key":"atypb1","volume-title":"Student drug use, attitudes and beliefs. 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