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Game Theory: Popular Online Games Get Psychologists' Help

Top online video games study ways to keep users engaged.
02:09 | 12/06/2012

Transcript for Game Theory: Popular Online Games Get Psychologists' Help

And now, we have a report on a secret in your neighborhood, and not among teenage kids. But moms, dads, grownups, spending a fortune on something they're finding hard to stop. Abc's david wright... See More
This transcript has been automatically generated and may not be 100% accurate.
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