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Behavioral economic interactions between cannabis and alcohol purchasing: Associations with disordered use
Sean B Dolan1, Tory R Spindle1, Ryan Vandrey1
1Department of Psychiatry and Behavioral Sciences.
Experimental and Clinical Psychopharmacology
|October 1, 2020
Summary
Cannabis and alcohol often act as complements, meaning price changes for one affect the other. Individuals with higher complementarity scores show greater disordered use of both substances.
Area of Science:
- Behavioral Economics
- Public Health
- Substance Use Research
Background:
- Evolving cannabis policies necessitate understanding cannabis-alcohol interactions.
- Concurrent use of cannabis and alcohol is common among adults.
Purpose of the Study:
- To investigate the economic relationship between cannabis and alcohol consumption.
- To identify how individual differences in complementarity predict substance use disorders.
Main Methods:
- Online survey of 711 past-month cannabis and alcohol users.
- Hypothetical purchasing tasks (single-item and cross-commodity) to assess price elasticity.
- Administration of Alcohol and Cannabis Use Disorder Identification Tests (AUDIT and CUDIT).
Main Results:
- Group data indicated cannabis and alcohol function as complements.
- Individual data revealed significant variability, including substitution and independence.
- Greater complementarity correlated with higher self-reported use and AUDIT/CUDIT scores, indicating increased risk for disordered use.
Conclusions:
- Individuals treating cannabis and alcohol as complements are more prone to disordered use.
- Price manipulation (taxes) and cosale restrictions are potential public health strategies.
- Understanding individual economic interactions is crucial for effective substance use regulation.
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