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Playing video games is a common recreational activity of adolescents. Recent research associated frequent video game playing with improvements in cognitive functions. Improvements in cognition have been related to grey matter changes in prefrontal cortex.

Games have long been accused of making players violent, but evidence has been building over the years that they can have positive effects. Scientists say they are not only understanding why, but they also trying to put these observations to the test.

Taking the rules of video games and applying them to everyday life was billed as the next big thing, something that would transform everything from dull office work to how we exercise. But can it really work?