What does a teenage brain on Google look like? Do all those hours spent online rewire the circuitry? Could these kids even relate better to emoticons than to real people? These sound like concerns from worried parents. But they're coming from certain brain scientists.

Violent video games have gotten a lot of public attention, but some current concerns go well beyond gaming. Some scientists think the wired world might be changing the way we read, learn, and interact with each other.

There are no firm answers yet, but Dr. Gary Small, a psychiatrist at UCLA, argues that daily exposure to digital technologies such


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