Evidence map›Paper›PMID 32519578›Full record

ArticleJournal of psychopharmacology (Oxford, England)2020

Disentangling the effects of cannabis and cigarette smoking on impulsivity.

Jason T Round, Therese E Fozard, Amanda A Harrison, Katerina Z Kolokotroni

Open access · hybridAbstract readComparative Study
In one paragraph

Article in Journal of psychopharmacology (Oxford, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 33% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Jason T RoundLeeds School of Social Sciences, Leeds Beckett University, Leeds, UK.ORCID 0000-0002-4941-2802
Therese E FozardLeeds School of Social Sciences, Leeds Beckett University, Leeds, UK.
Amanda A HarrisonFaculty of Medicine & Health, University of Leeds, Leeds, UK.
Katerina Z KolokotroniLeeds School of Social Sciences, Leeds Beckett University, Leeds, UK.
Leeds Beckett University · GBUniversity of Leeds · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCannabis smoking and cigarette smoking often co-occur, yet limited research has investigated the potentially different role impulsivity may play when these behaviours occur in isolation, compared with in combination.

aimsThis study examined trait and behavioural impulsivity as a function of both cigarette and cannabis smoking.

methodsTrait impulsivity (BIS-11) was compared between 44 non-smokers, 76 cigarette only, 47 cannabis only and 58 cannabis plus cigarette smokers. The effects of cigarette and cannabis smoking on behavioural impulsivity (stop-signal and information sampling tasks) were then assessed in 87 of these participants during a laboratory session.

resultsTrait impulsivity was significantly higher in cigarette smokers than non-smokers, irrespective of cannabis use, except for motor impulsivity, where cigarette smoking was only associated with elevated trait impulsivity in non-smokers of cannabis. Dimensions of trait impulsivity were significantly positively related to cigarette smoking frequency and nicotine dependence, but not to cannabis smoking frequency or dependence. Smoking cigarettes or cannabis was associated with significantly impaired reflection impulsivity relative to not smoking either substance. However, no additional increases in reflection impulsivity were observed in those who smoked both cigarettes and cannabis. No group differences in response inhibition were detected.

conclusionsHeightened trait impulsivity appears to be uniquely related to cigarette smoking, whilst the smoking of cigarettes or cannabis is associated with impairments in reflection impulsivity. Improved outcomes for treating cannabis dependence may result from encouraging concomitant cigarette smokers to cease using both drugs simultaneously in order to reduce heightened impulsivity and risk of relapse.

Indexed as

Impulsive BehaviorPersonalityPsychomotor PerformanceAdultCigarette SmokingDecision MakingFemaleHumansInhibition, PsychologicalMaleMarijuana AbuseMarijuana SmokingTobacco Use DisorderYoung Adultbehavioural impulsivitycannabinoid receptor partial agonistcannabisdrug abusehumansnicotinenicotinic acetylcholine receptor agonisttobaccoTrait impulsivityδ-9-tetrahydrocannibinol (THC)

Identifiers

PMID32519578
PMCPMC7436435
OpenAlexW3033856274

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.