Evidence map›Paper›PMID 41521902›Full record

ArticleAddiction (Abingdon, England)2026

Is toke cheap? Correspondence between cannabis demand and purchase in the laboratory.

Elizabeth R Aston, Benjamin L Berey, Michael Amlung, Robert Swift, James MacKillop, Jane Metrik

Abstract read
In one paragraph

Article in Addiction (Abingdon, England), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. 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

6 authors.

Elizabeth R AstonCenter for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, USA.ORCID https://orcid.org/0000-0001-6965-318X
Benjamin L BereyCenter for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, USA.
Michael AmlungCofrin Logan Center for Addiction Research and Treatment, Department of Applied Behavioral Science, University of Kansas, Lawrence, KS, USA.ORCID https://orcid.org/0000-0003-4483-7155
Robert SwiftCenter for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, USA.
James MacKillopCenter for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, USA.ORCID https://orcid.org/0000-0002-8695-1071
Jane MetrikCenter for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, USA.ORCID https://orcid.org/0000-0001-9727-3838

Funding

ALCOHOL INTERVENTION/TREATMENT OUTCOME RESEARCH TRAININGT32AA007459 · NIAAA · BROWN UNIVERSITY · PI ROBERT MIRANDA, PETER M. MONTI · 1986 to 2026
$13.3M
Behavioral Economic Analysis of Demand for MarijuanaK01DA039311 · NIDA · BROWN UNIVERSITY · PI ASTON, ELIZABETH · 2015 to 2019
$902k
CSRD VA IK2 CX002645NIAAA NIH HHS T32 AA007459NIDA NIH HHS K01 DA039311NIDA NIH HHS K01DA039311U.S. Department of Veterans Affairs IK2CX002645
6 · The paper itself

Abstract

BACKGROUND AND

aimsThe typical Marijuana Purchase Task (MPT) assesses hypothetical demand (i.e. relative reinforcing value) for cannabis across escalating prices. Cannabis demand has been related to use frequency, craving, cannabis use disorder symptoms and cue-exposure response, among other outcomes. This study assessed MPT performance for hypothetical consumption in relation to in vivo behavior in the laboratory wherein rewards were actualized.

methodsIndividuals endorsing cannabis use at least twice weekly (n = 92) participated in a laboratory cannabis self-administration study. Participants completed MPTs for Hypothetical and Actual cannabis. One trial (i.e. amount purchased at specified price) was randomly selected from the Actual MPT and participants with non-zero value trials (n = 81) were permitted to smoke up to that amount during a 1-hour session in the laboratory.

resultsBivariate Pearson correlations demonstrated that cannabis consumption preferences were highly similar across the Hypothetical and Actual MPT at the price (rs = 0.45-0.81) and index (rs = 0.46-0.81) level. However, mean O

conclusionsHigh correspondence between Hypothetical and Actual Marijuana Purchase Task (MPT) performance in a laboratory setting suggests that hypothetical versions of the MPT may be broadly valid measures of cannabis demand. The robust relationship between anticipated consumption and actual cannabis quantity smoked in the laboratory suggests individual self-report accurately predicts subsequent self-administration, further supporting the construct validity of hypothetical MPTs.

Indexed as

CommerceConsumer BehaviorMarijuana SmokingMarijuana UseAdolescentAdultCannabisFemaleHumansMaleReinforcement, PsychologyRewardSelf AdministrationYoung Adultbehavioral economicscannabisdemandmarijuanapurchase taskrelative value

Identifiers

PMID41521902
PMCPMC12931968

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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.