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Almost winning is just as exciting for problem gamblers

The views expressed are those of the author and are not necessarily those of Scientific American.


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Oh, so close. Just one more try.

It’s hard to understand what keeps problem gamblers betting after a long losing streak. But a new study published May 5 in The Journal of Neuroscience suggests their brains’ reward centers, part of the dopamine system (so-called because the neurons release the neurotransmitter dopamine), react the same way to a "near miss" as they would to a win.

Researchers from the University of Cambridge, U.K., used functional magnetic resonance imaging (fMRI) to scan the brains of 20 gamblers with varying degrees of gambling intensities while they played a computerized slot machine. The brain reward centers were active in problem gamblers even when the slot machine icons almost lined up but didn’t. So the near miss delivered the dopamine, if not the dollars. 

"These findings are exciting because they suggest that near-misses may elicit a dopamine response in the more severe gamblers, despite the fact that no actual reward is delivered," said study co-author Luke Clark in a prepared statement. "If these bursts of dopamine are driving addictive behavior, this may help to explain why problem gamblers find it so difficult to quit."

Studies have linked the dopamine system with other forms of addiction, including drug abuse. "The results highlight some of the links between problem gambling and drug addiction, and have implications for both psychological and drug treatment for problem gamblers," Clark said.

Photo: iStockphoto/bonniej





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  1. 1. silvrhairdevil 9:00 pm 05/5/2010

    That is the origin of the now-misused expression "sick".

    The adrenalin/dopamine rush of losing often leaves a sick feeling in the gut.

    Link to this
  2. 2. paulwillfixit@gmail.com 1:05 am 05/6/2010

    Sounds like we need some legislation that makes the pokies return purely random results to ensure the programmers don’t deliberately show a high rate of near-wins.

    Link to this
  3. 3. lithiumdeuteride 4:36 am 05/6/2010

    Casinos would be wise to take advantage of this effect, and use slot machines that produce ‘near-misses’ combinations more often, but not so often that the player is desensitized.

    Link to this
  4. 4. lithiumdeuteride 4:36 am 05/6/2010

    Casinos would be wise to take advantage of this effect, and use slot machines that produce ‘near-misses’ combinations more often, but not so often that the player is desensitized.

    Link to this
  5. 5. Taizo 6:35 am 05/6/2010

    The dopamine rush makes players feel ecstacy, and they can’t forget won games. So, they want to play gambles again, no matter how they know gambles damage their future. gamble addiction’s treatment is as difficult as drug’s.

    Link to this

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