Virtual harm reduction efforts for Internet gambling: effects of deposit limits on actual Internet sports gambling behavior
Related Experiment Video
Updated: Jul 3, 2026

Transcranial Direct Current Stimulation for Online Gamers
Published on: November 9, 2019
Anja Broda1, Debi A LaPlante, Sarah E Nelson
1Coordination Center for Clinical Trials Leipzig (KKSL), Germany. anja.broda@kksl.uni-leipzig.de
Background:
In an attempt to reduce harm related to gambling problems, an Internet sports betting service provider, bwin Interactive Entertainment, AG (bwin), imposes limits on the amount of money that users can deposit into their online gambling accounts. We examined the effects of these limits on gambling behavior.
Methods:
We compared (1) gambling behavior of those who exceeded deposit limits with those who did not, and (2) gambling behavior before and after exceeding deposit limits. We analyzed 2 years of the actual sports gambling behavior records of 47000 subscribers to bwin.
Results:
Only 160 (0.3%) exceeded deposit limits at least once. Gamblers who exceeded deposit limits evidenced higher average number of bets per active betting day and higher average size of bets than gamblers who did not exceed deposit limits. Comparing the gambling behavior before and after exceeding deposit limits revealed slightly more unfavorable gambling behavior after exceeding deposit limits.
Conclusion:
Our findings indicate that Internet gamblers who exceed deposit limits constitute a group of bettors willing to take high risks; yet, surprisingly, they appear to do this rather successfully because their percentage of losses is lower than others in the sample. However, some of these gamblers exhibit some poor outcomes. Deposit limits might be necessary harm reduction measures to prevent the loss of extremely large amounts of money and cases of bankruptcy. We discuss how these limits might be modified based on our findings.
Related Concept Videos
Stimulants
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
CNS Depressants: Alcohol and Nicotine
Substance Use Disorders Affecting Sleep
Understanding the concepts of physical dependence,...
Self-Regulation
Stress Prevention and Stress Management Techniques IV
Drug Dependence

