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Does morning affect contribute to daily Cannabis use?
Maria Testa1, Weijun Wang1, Jaye L Derrick2
1Department of Psychology and Clinical and Research Institute on Addictions, University at Buffalo, 1021 Main Street, Buffalo, NY 14203, United States.
Addictive Behaviors
|March 12, 2019
Summary
Lower positive affect and partner cannabis use increase the likelihood of an individual using cannabis. Cannabis use improved positive affect and reduced negative affect immediately after use, suggesting positive reinforcement.
Area of Science:
- Psychology
- Addiction Research
- Behavioral Science
Background:
- Theories suggest substance use, including cannabis, aims to alleviate negative emotions.
- Understanding the daily fluctuations in affect and their relationship with cannabis use is crucial.
Purpose of the Study:
- To investigate if daily variations in positive and negative affect predict subsequent cannabis use.
- To examine the immediate effects of cannabis use on positive and negative affect.
Main Methods:
- A 30-day daily diary study involving 366 participants (183 couples).
- Multilevel modeling was used to analyze self-reported affect (positive, hostile, anxious) and cannabis use.
- Data included morning affect levels, immediate post-use affect, and partner's cannabis use.
Main Results:
- Lower-than-typical morning positive affect and partner's cannabis use predicted increased individual cannabis use.
- Hostile or anxious affect levels did not predict subsequent cannabis use.
- Cannabis use led to immediate increases in positive affect and decreases in hostile and anxious affect.
Conclusions:
- Daily affective states, particularly low positive affect, influence cannabis use decisions.
- Cannabis use appears to provide immediate positive reinforcement by improving mood.
- Partner's cannabis use is a significant contextual factor in individual use patterns.
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