Evidence map›Paper›PMID 41222757›Full record

Trial reportJournal of gambling studies2026

Problem Gambling and its Relation to Delayed Reward Discounting: A Secondary Analysis of a Randomized Controlled Trial.

Dominic Haag, Andreas Meyer, Nikolaos Boumparis, Andreas Wenger, Christian Baumgartner, Doris Malischnig, Matthew T Keough, David C Hodgins, Yasser Khazaal, Severin Haug and 1 more

Abstract readRandomized Controlled Trial
PubMed Full text at PMC Publisher
In one paragraph

Trial report in Journal of gambling studies, 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

11 authors.

Dominic HaagSwiss Research Institute for Public Health and Addiction, University of Zurich, Konradstrasse 32, 8005, Zurich, Switzerland.ORCID http://orcid.org/0009-0002-4520-9222
Andreas MeyerSwiss Research Institute for Public Health and Addiction, University of Zurich, Konradstrasse 32, 8005, Zurich, Switzerland.
Nikolaos BoumparisSwiss Research Institute for Public Health and Addiction, University of Zurich, Konradstrasse 32, 8005, Zurich, Switzerland.
Andreas WengerSwiss Research Institute for Public Health and Addiction, University of Zurich, Konradstrasse 32, 8005, Zurich, Switzerland.
Christian BaumgartnerDepartment of Adult Psychiatry and Psychotherapy, Psychiatric University Clinic Zurich and University of Zurich, Zurich, Switzerland.
Doris MalischnigTherapy Center Ybbs, Vienna Healthcare Group, Ybbs an der Donau, Austria.
Matthew T KeoughDepartment of Psychology, York University, Toronto, ON, Canada.
David C HodginsUniversity of Calgary, Calgary, Canada.
Yasser KhazaalDepartment of Addiction Medicine, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland.
Severin HaugSwiss Research Institute for Public Health and Addiction, University of Zurich, Konradstrasse 32, 8005, Zurich, Switzerland.
Michael P SchaubSwiss Research Institute for Public Health and Addiction, University of Zurich, Konradstrasse 32, 8005, Zurich, Switzerland. michael.schaub@isgf.uzh.ch.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Delayed reward discounting (DRD) refers to the phenomenon where future rewards are perceived as less valuable compared to immediate rewards. The extent of this devaluation has been repeatedly linked to addictive behaviors. DRD could play an important role in the development and maintenance of problem gambling. We aim to better understand the relationship between DRD and problem gambling, examine temporal changes in DRD, and evaluate its predictive value for adherence. We conducted a secondary analysis of data from participants in the Win Back Control study (n = 345), a two-arm RCT that demonstrated effectiveness in reducing problematic gambling behavior. DRD was assessed using the Monetary Choice Questionnaire (MCQ), the severity of problem gambling was measured with the Problem Gambling Severity Index (PGSI), and gambling symptom severity was evaluated using the Gambling Symptom Assessment Scale (G-SAS). DRD is significantly positively associated with gambling symptom severity (G-SAS: b = 13.90, p = 0.002) and problem gambling severity (PGSI: b = 9.39, p < 0.001). DRD decreased significantly on a weekly basis over the three measurement time points (b = -0.001, p < 0.001). DRD could not be identified as a mediator, which should be further investigated in future studies. DRD is significantly positively associated with problem gambling severity and gambling symptom severity. DRD does not serve as a predictor of adherence. DRD decreases over the three time points along with severities of gambling behavior and gambling symptoms. However, the findings are correlational and may be affected by attrition bias.

Indexed as

Behavior, AddictiveDelay DiscountingGamblingRewardAdultFemaleHumansImpulsive BehaviorMaleMiddle AgedSeverity of Illness IndexSurveys and QuestionnairesDelayed reward discountingProblem gamblingRandomized controlled trialTemporal discounting, impulsivity, adherence

Identifiers

PMID41222757
PMCPMC13269301

What OpenQuestion holds

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Registered trials

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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.