Trial reportPsychopharmacology2015
Cannabis and creativity: highly potent cannabis impairs divergent thinking in regular cannabis users.
Trial report in Psychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 53 citations in OpenAlex.
- The effects of standardized cannabis products in healthy volunteers and patients: a systematic literature review.Frontiers in pharmacology · 2024Pooled it
- A Systematic Review of Creativity-Related Studies Applying the Remote Associates Test From 2000 to 2019.Frontiers in psychology · 2020Pooled it
- Exploring the effect of microdosing psychedelics on creativity in an open-label natural setting.Psychopharmacology · 2018Trial
- Exploring Associations Between Substance Use, Self-Regulated Learning Practices, and Academic Challenges at Five Canadian Universities.Journal of college student retention : research, theory & practice · 2026Article
- Sex differences in the acute effects of cannabis: the need for hypothesis-driven research.Journal of psychiatry & neuroscience : JPN · 2026Article
- The impact of chronic heroin addiction on creative cognition: an EEG study based on divergent thinking.Translational psychiatry · 2025Article
- Neural, genetic, and cognitive signatures of creativity.Communications biology · 2024Article
- Assessment of cognitive and psychomotor impairment, subjective effects, and blood THC concentrations following acute administration of oral and vaporized cannabis.Journal of psychopharmacology (Oxford, England) · 2021Article
- Medical cannabis for the treatment of fibromyalgia syndrome: a retrospective, open-label case series.Journal of cannabis research · 2021Article
- Assessing Cannabis Use Disorder in Medical Cannabis Patients: Interim Analyses from an Observational, Longitudinal Study.Cannabis (Albuquerque, N.M.) · 2021Article
- Made from concentrate? A national web survey assessing dab use in the United States.Drug and alcohol dependence · 2018Article
- Marijuana matters: reviewing the impact of marijuana on cognition, brain structure and function, & exploring policy implications and barriers to research.International review of psychiatry (Abingdon, England) · 2018Review
- The Grass Might Be Greener: Medical Marijuana Patients Exhibit Altered Brain Activity and Improved Executive Function after 3 Months of Treatment.Frontiers in pharmacology · 2017Article
- Explorative Placebo-Controlled Double-Blind Intervention Study with Low Doses of Inhaled Δ9-Tetrahydrocannabinol and Cannabidiol Reveals No Effect on Sweet Taste Intensity Perception and Liking in Humans.Cannabis and cannabinoid research · 2017Article
- The Creative Stereotype Effect.PloS one · 2016Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
rationaleCannabis users often claim that cannabis has the potential to enhance their creativity. Research suggests that aspects of creative performance might be improved when intoxicated with cannabis; however, the evidence is not conclusive.
objectiveThe aim of this study was to investigate the acute effects of cannabis on creativity.
methodsWe examined the effects of administering a low (5.5 mg delta-9-tetrahydrocannabinol [THC]) or high (22 mg THC) dose of vaporized cannabis vs. placebo on creativity tasks tapping into divergent (Alternate Uses Task) and convergent (Remote Associates Task) thinking, in a population of regular cannabis users. The study used a randomized, double-blind, between-groups design.
resultsParticipants in the high-dose group (n = 18) displayed significantly worse performance on the divergent thinking task, compared to individuals in both the low-dose (n = 18) and placebo (n = 18) groups.
conclusionsThe findings suggest that cannabis with low potency does not have any impact on creativity, while highly potent cannabis actually impairs divergent thinking.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.