Evidence map›Paper›PMID 40307922›Full record

ArticleBMC psychology2025

A longitudinal replication study testing migration from video game loot boxes to gambling in British Columbia, Canada.

Lucas Palmer, Gabriel A Brooks, Luke Clark

Abstract read
In one paragraph

Article in BMC psychology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

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3 · Its place in the literature

Who cites it

7 citing papers in PubMed.

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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

3 authors.

Lucas PalmerDepartment of Psychology, Centre for Gambling Research at UBC, University of British Columbia, Vancouver, B.C, Canada.
Gabriel A BrooksDepartment of Psychology, Centre for Gambling Research at UBC, University of British Columbia, Vancouver, B.C, Canada.
Luke ClarkDepartment of Psychology, Centre for Gambling Research at UBC, University of British Columbia, Vancouver, B.C, Canada. luke.clark@psych.ubc.ca.

Funding

Natural Sciences and Engineering Research Council of Canada RGPIN-2017-04069
6 · The paper itself

Abstract

backgroundLoot boxes are randomized reward mechanics in modern video games that share features with conventional gambling products. Research studies have begun to test longitudinal patterns ("migration") from engagement with loot boxes to gambling behavior. This study investigated such effects at a 6-month follow-up in an online sample of young adults that play video games (aged 19-25) from British Columbia, Canada.

methodsParticipants were stratified into two subgroups at their baseline assessment: 83 reported they did not currently gamble and 43 reported they currently gamble, after cleaning. At baseline, participants provided responses to the Risky Loot Box Index (RLI) and estimates of their past year spending on both randomized (i.e., loot boxes) and non-randomized ("direct purchase") microtransactions. Microtransaction spending and RLI scores at baseline were tested as predictors of self-identified gambling initiation and spend at follow-up. We tested a set of frequentist regressions and a corresponding set of Bayesian regressions.

resultsAt baseline, participants who reported gambling showed higher levels of engagement with both randomized and non-randomized microtransactions. Among non-gambling participants at baseline, loot box spending and RLI predicted gambling initiation at the follow-up, in a Bayesian logistic regression with informed priors. Loot box spending and RLI at baseline predicted gambling expenditure at follow-up, in both the frequentist and Bayesian linear regressions. Spending on direct purchase microtransactions did not predict gambling initiation in either set of models when controlling for loot box spending, underscoring the role of randomized rewards.

conclusionsThese data provide further prospective evidence for gambling 'migration' in a sample recruited in Western Canada, indicating that young adults who spend money on loot boxes are at elevated risk for real-money gambling.

Indexed as

GamblingRewardVideo GamesAdultBayes TheoremBritish ColumbiaFemaleHumansLongitudinal StudiesMaleYoung AdultBayesianBehavioral addictionGambling behaviorLongitudinalLoot boxesRandomized rewardsReplication

Identifiers

PMID40307922
PMCPMC12044733

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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.