Marijuana's effects on human cognitive functions, psychomotor functions, and personality

The Journal of General Psychology
J B Murray

Abstract

Marijuana is complex chemically and not yet fully understood, but it is not a narcotic. Like alcohol, marijuana acts as both stimulant and depressant, but it lingers in body organs longer than alcohol. Smoking marijuana can injure mucosal tissue and may have more carcinogenic potential than tobacco. Research has indicated that marijuana intoxication definitely hinders attention, long-term memory storage, and psychomotor skills involved in driving a car or flying a plane. Expectations and past experience with marijuana have often influenced results more than pharmacological aspects have. Marijuana has triggered psychotic episodes in those more vulnerable. Psychological and some instances of physiological dependence on marijuana have been demonstrated. As a psychoactive drug, marijuana surely alters mental functioning. Although it is possible that chronic use of marijuana produces irreversible damage to mind or brain areas, this has not been determined by research.

References

Jan 1, 1976·Annals of the New York Academy of Sciences·E W Gill
Jan 1, 1976·Annals of the New York Academy of Sciences·L Hollister
Oct 1, 1978·The American Journal of Psychiatry·D A Treffert
Mar 22, 1979·Psychopharmacology·J A BachmanR T Jones
Mar 22, 1979·Psychopharmacology·P L CloptonL Huey
Oct 1, 1978·Annals of Internal Medicine
May 9, 1977·Psychopharmacology·C F DarleyB S Kopell
Jul 1, 1979·Archives of General Psychiatry·D S JanowskyR Pechnick
Jan 1, 1979·The International Journal of the Addictions·R O PihlL Costa
Jun 1, 1979·Journal of Health and Social Behavior·A C Miranne
Jan 1, 1979·Journal of Psychedelic Drugs·N E Zinberg
Mar 21, 1977·JAMA : the Journal of the American Medical Association·B T CoS Y Hill
Dec 1, 1977·Perceptual and Motor Skills·T O Kvålseth
Sep 1, 1976·The American Journal of Psychiatry·F T Melges
Dec 1, 1976·Psychological Reports·F Patalano
Jan 1, 1976·Annals of the New York Academy of Sciences·P ConsroeH Laird
Jan 1, 1976·Annals of the New York Academy of Sciences·R T JonesJ Bachman
Jan 1, 1976·Annals of the New York Academy of Sciences·R W HansteenB Jones
Jan 1, 1975·Annual Review of Pharmacology·W D Paton
Mar 1, 1977·Psychological Bulletin·E L Abel
Nov 1, 1977·Clinical Pharmacology and Therapeutics·R Nowlan, S Cohen
Sep 1, 1976·The American Journal of Psychiatry·C SalzmanR I Shader
Jan 1, 1976·Annals of the New York Academy of Sciences·R L Dornbush, A M Freedman
Jan 1, 1976·Annals of the New York Academy of Sciences·D L Farnsworth
Jan 1, 1976·Annals of the New York Academy of Sciences·I Campbell
Jan 1, 1976·Annals of the New York Academy of Sciences·G D MellingerD I Manheimer
Jan 1, 1976·Annals of the New York Academy of Sciences·I GreenbergT F Babor
Jan 1, 1976·Annals of the New York Academy of Sciences·J R TinklenbergP Murphy
Feb 1, 1975·Clinical Pharmacology and Therapeutics·F R FreemonM K EL-Yousef
Jun 1, 1975·Archives of General Psychiatry·L HollisterM L Gerber
Jul 1, 1975·Clinical Pharmacology and Therapeutics·L Hollister, H Gillespie
Oct 16, 1975·The New England Journal of Medicine·S E SallanE Frei
Jul 1, 1975·Archives of General Psychiatry·D Kandel, R Faust
Nov 28, 1975·Science·D Kandel
Dec 1, 1975·Drug and Alcohol Dependence·L Hollister, J E Overall
Jan 15, 1976·The New England Journal of Medicine·D P TashkinC E Harper
Apr 1, 1976·The American Journal of Psychiatry·D S JanowskyL P Bozzetti
Dec 4, 1971·Lancet·A M CampbellM J Williams
Jun 29, 1973·Psychopharmacologia·W H RicklesK E McIntyre
Jan 1, 1974·The Psychiatric Quarterly·J C GrossmanR Eisenman
Feb 1, 1971·Archives of General Psychiatry·N Q BrillH M Grayson
Aug 3, 1972·The New England Journal of Medicine·P BeaconsfieldR Rainsbury
Oct 25, 1974·Science·H Klonoff
Nov 14, 1974·The New England Journal of Medicine·J H MendelsonT F Babor
Oct 1, 1974·Journal of Clinical Psychology·W E Simon
Oct 1, 1974·The Journal of Nervous and Mental Disease·A S CarlinL M Halpern
Sep 1, 1974·The Journal of Genetic Psychology·W H CunninghamW D English
Mar 1, 1972·The British Journal of Addiction to Alcohol and Other Drugs·L S Linn
Dec 1, 1973·The British Journal of Addiction to Alcohol and Other Drugs·H M Annis, R G Smart
Jan 1, 1974·Transactions of the New York Academy of Sciences·R L Dornbush
Feb 1, 1973·Psychological Bulletin·G N BrauchtK L Berry
Mar 2, 1973·Science·O J RafaelsenL Rafaelsen
Nov 1, 1973·Clinical Pharmacology and Therapeutics·M A EvansR B Forney
Jan 1, 1974·Psychopharmacologia·L VachonE Rich
Feb 1, 1974·British Journal of Pharmacology·E A CarliniC R Schuster
Jan 1, 1974·Pharmacology·W G Drew, L L Miller
Dec 1, 1972·The American Journal of Psychiatry·M D Stanton, A Bardoni
Feb 1, 1973·Archives of General Psychiatry·M GalanterR J Wyatt
Feb 1, 1973·The American Journal of Psychiatry·J S Hochman, N Q Brill
Apr 1, 1973·Journal of Personality and Social Psychology·R JessorJ Finney
Jan 1, 1973·Experientia·L Hollister
Aug 1, 1973·Journal of Consulting and Clinical Psychology·H R VictorR Eisenman
Oct 15, 1973·Psychopharmacologia·P BechO J Rafaelsen
Nov 1, 1973·Archives of General Psychiatry·T Harding, F Knight
Jan 1, 1973·Psychopharmacologia·W T RothL Hollister
Apr 1, 1974·Archives of General Psychiatry·M GalanterF L Nurnberg
Apr 18, 1974·The New England Journal of Medicine·R C KolodnyG Toro
Jul 1, 1974·Archives of General Psychiatry·R C StillmanJ Eich
Jun 1, 1974·Perceptual and Motor Skills·H MoskowitzM Burns
Jul 1, 1967·The Journal of General Psychology·J B Murray
Jan 1, 1967·Psychopharmacologia·H IsbellF Korte
Dec 13, 1968·Science·A T WeilJ M Nelsen
May 29, 1970·Science·F T MelgesH Gillespie
Sep 12, 1970·Nature·E L Abel
Sep 1, 1970·Archives of General Psychiatry·L Hollister, H Gillespie
Sep 1, 1970·Archives of General Psychiatry·F T MelgesH Gillespie
Apr 2, 1971·Science·L Hollister
Mar 1, 1971·Clinical Pharmacology and Therapeutics·J E MannoR B Forney
Jun 1, 1971·Archives of General Psychiatry·F T MelgesH Gillespie
Aug 1, 1971·The American Journal of Psychiatry·R L DornbushA M Freedman
Aug 1, 1971·The American Journal of Psychiatry·R E MeyerS M Mirin
Aug 19, 1970·Psychopharmacologia·R T Jones, G C Stone
Aug 7, 1970·Science·R MechoulamY Grunfeld
Feb 1, 1972·Archives of General Psychiatry·J S HarmatzC Salzman
Oct 2, 1972·JAMA : the Journal of the American Medical Association·H Kolansky, W T Moore
Mar 1, 1971·The American Journal of Psychiatry·S M MirinS Fisher
Apr 19, 1971·JAMA : the Journal of the American Medical Association·H Kolansky, W T Moore
Aug 2, 1971·JAMA : the Journal of the American Medical Association·J A HalikasS B Guze
Aug 1, 1971·The American Journal of Psychiatry·E Colbach
Aug 1, 1971·The American Journal of Psychiatry·M R LippZ Taintor
Aug 1, 1971·The American Journal of Psychiatry·M H KeelerB A Rouse
Aug 1, 1971·The American Journal of Psychiatry
Dec 1, 1969·Perceptual and Motor Skills·D F CaldwellP E Merriam
Dec 1, 1969·Perceptual and Motor Skills·D F CaldwellP E Merriam
Feb 1, 1970·Archives of General Psychiatry·I E WaskowM M Katz
Apr 30, 1970·The New England Journal of Medicine·A T Weil
May 23, 1970·Nature·C T Tart
Jun 20, 1970·Nature·J R TinklenbergH Gillespie
Sep 1, 1970·Archives of General Psychiatry·L D ClarkE N Nakashima
Nov 1, 1970·Clinical Pharmacology and Therapeutics·J E MannoR B Forney
Aug 1, 1970·Journal of Consulting and Clinical Psychology·R HoganS Fox
Jan 1, 1971·Journal of Clinical Psychology·G D Shean, F Fechtmann
Jul 1, 1971·Clinical Pharmacology and Therapeutics·G F KiplingerR B Forney
Sep 1, 1968·The American Journal of Psychiatry·W H McGlothlin, L J West
Sep 1, 1968·The American Journal of Psychiatry·L D Clark, E N Nakashima
Sep 1, 1968·The American Journal of Psychiatry·M H KeelerM B Liptzin
Nov 1, 1968·Clinical Pharmacology and Therapeutics·L HollisterH Gillespie
Dec 23, 1965·The New England Journal of Medicine·J A Waller
Jan 1, 1980·Psychopharmacology·E S ParkerR J Wyatt
May 1, 1981·The American Journal of Psychiatry·D L BraffD S Janowsky
Sep 1, 1982·The American Journal of Psychiatry·C A DackisM S Gold
Apr 21, 1983·The New England Journal of Medicine·A M Nicholi
Jan 1, 1983·The International Journal of the Addictions·L T Winfree, C T Griffiths
Jul 1, 1983·The American Journal of Psychiatry·J YagerR Rubenstein
Feb 1, 1984·Archives of General Psychiatry·D B Kandel
Jul 1, 1982·The International Journal of the Addictions·M Penning, G E Barnes
Jan 1, 1982·Psychopharmacology·C D WetzelP L Clopton
Jan 1, 1981·Annals of the New York Academy of Sciences·J T Ungerleider, T Andrysiak
Sep 1, 1980·The Journal of Genetic Psychology·J S BrookM Whiteman
Feb 1, 1981·The American Journal of Psychiatry·H V Szymanski
Dec 1, 1980·Psychological Reports·C Stark-AdamecR E Adamec
Jul 24, 1981·Science·J SchaefferJ T Ungerleider
Jan 1, 1981·Annals of the New York Academy of Sciences·S Cohen
Apr 1, 1981·Psychological Reports·C R Creason, M Goldman
Dec 1, 1981·Journal of Abnormal Psychology·W D Fabian, S M Fishkin
Oct 1, 1981·The International Journal of the Addictions·C Stark-AdamecR O Pihl
Mar 11, 1982·The New England Journal of Medicine·A S Relman
Mar 19, 1982·Science·T H Maugh
Aug 1, 1982·Psychological Reports·C Stark-AdamecR O Pihl
Jan 1, 1981·The American Journal of Drug and Alcohol Abuse·H HendinA C Carr
May 1, 1982·The International Journal of the Addictions·E L Abel
Jul 22, 1982·The New England Journal of Medicine
Dec 1, 1982·The International Journal of the Addictions·J F Rooney, T L Wright
May 1, 1981·Archives of General Psychiatry·H G PopeJ O Cole
Nov 1, 1980·Chest·D P TashkinB J Shapiro
Feb 19, 1981·The New England Journal of Medicine·S L Kagen
Dec 1, 1950·Journal of Experimental Psychology·J CLAUSEN
Jun 15, 1973·Science·C J Schwarz, J Kaplan
Aug 30, 1974·Science·T H Maugh

Citations

Jan 1, 1989·Journal of Substance Abuse Treatment·N S Miller, M S Gold
Apr 4, 1998·International Journal of Law and Psychiatry·J C YuilleH F Herve
Feb 11, 2011·Journal of Psychoactive Drugs·Beth M AndersonDaniel S O'Leary
Jan 17, 1987·British Medical Journal·C H Ashton
Sep 1, 1992·The Veterinary Clinics of North America. Small Animal Practice·N E Robinson
Aug 26, 2015·Occupational and Environmental Medicine·Edmarlon GirottoCamilo Molino Guidoni
Jan 16, 2004·Journal of Addictive Diseases·Eric A Voth

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