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Updated: Jun 24, 2025
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Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
Published on: August 18, 2020
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Short-term mindsets show co-development with adolescent delinquency, but not with adolescent cannabis use
Ivy N Defoe1, Jean-Louis van Gelder2,3, Denis Ribeaud4
1University of Amsterdam, Amsterdam, The Netherlands.
Summary
Impulsivity and short-term thinking are linked to delinquency development in adolescents. However, this connection was not found for cannabis use, suggesting different developmental pathways for risk behaviors.
Area of Science:
- Psychology
- Criminology
- Developmental Science
Background:
- Theories like the General Theory of Crime and Psychosocial Maturity Hypothesis suggest links between mindsets and behavior.
- Understanding the co-development of adolescent risk behaviors and underlying psychological traits is crucial for intervention.
Purpose of the Study:
- To examine the co-development of short-term mindsets (impulsivity, future orientation) and risk behaviors (cannabis use, delinquency) in Swiss adolescents.
- To test theoretical predictions regarding the interplay between psychological traits and behavioral patterns over time.
Main Methods:
- Utilized parallel process latent growth modeling with three-wave longitudinal data from 1365 diverse Swiss adolescents.
- Analyzed baseline associations and developmental trajectories of impulsivity, future orientation, cannabis use, and delinquency.
Main Results:
- Confirmed baseline associations between short-term mindsets, risk behaviors, and between the two risk behaviors.
- Found significant co-development between short-term mindsets, particularly impulsivity, and delinquency.
- No significant co-development was observed between short-term mindsets and cannabis use.
Conclusions:
- Results support the General Theory of Crime and Psychosocial Maturity Hypothesis.
- Highlight the necessity of examining delinquency and cannabis use separately due to divergent developmental pathways.
- Suggests that Switzerland's liberal cannabis policies may influence these divergent findings.
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