Quantifying cannabis: A field study of marijuana quantity estimation

Psychology of Addictive Behaviors : Journal of the Society of Psychologists in Addictive Behaviors
Mark A PrinceMatthew R Pearson

Abstract

The assessment of marijuana use quantity poses unique challenges. These challenges have limited research efforts on quantity assessments. However, quantity estimates are critical to detecting associations between marijuana use and outcomes. We examined accuracy of marijuana users' estimations of quantities of marijuana they prepared to ingest and predictors of both how much was prepared for a single dose and the degree of (in)accuracy of participants' estimates. We recruited a sample of 128 regular-to-heavy marijuana users for a field study wherein they prepared and estimated quantities of marijuana flower in a joint or a bowl as well as marijuana concentrate using a dab tool. The vast majority of participants overestimated the quantity of marijuana that they used in their preparations. We failed to find robust predictors of estimation accuracy. Self-reported quantity estimates are inaccurate, which has implications for studying the link between quantity and marijuana use outcomes. (PsycINFO Database Record

Citations

Dec 13, 2019·Journal of Gambling Studies·Ken C Winters, James P Whelan
Jul 16, 2019·Substance Use & Misuse·Ashley N Linden-CarmichaelCathy Lau-Barraco
Dec 4, 2019·Brain and Behavior·Renée Martin-WillettL Cinnamon Bidwell
Apr 3, 2020·Alcoholism, Clinical and Experimental Research·Jeffrey D WardellJennifer P Read
Jul 28, 2020·Current Treatment Options in Psychiatry·Adina S FischerManpreet K Singh
Sep 26, 2020·Molecular Psychiatry·Deepak Cyril D'SouzaPatrick Skosnik
Feb 3, 2021·Journal of American College Health : J of ACH·Benjamin L BereyAli M Yurasek
Dec 29, 2020·Laryngoscope Investigative Otolaryngology·Vishal NarwaniDouglas M Hildrew
Feb 9, 2021·Addictive Behaviors·Kevin S MontesUNKNOWN Marijuana Outcomes Study Team
May 29, 2021·Drug and Alcohol Dependence·Gretchen BandoliCarla Marienfeld
Jun 8, 2021·Frontiers in Psychiatry·Hugo López-PelayoAntoni Gual

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