First it was radio. Then it was television. Now doomsayers are offering scary predictions about the consequences of smartphones and all the other digital devices to which we’ve all grown so attached. So why should you pay any attention to the warnings this time?
Apart from portability, the big difference between something like a traditional TV and your tablet is the social component, says Dr. David Strayer, a professor of cognition and neural science at the University of Utah. “Through Twitter or Facebook or email, someone in your social network is contacting you in some way all the time,” Strayer says.
“We’re inherently social organisms,” adds Dr. Paul Atchley, a cognitive psychologist at Kansas University. There’s almost nothing more compelling than social information, he says, which activates part of your brain’s reward system. Your noodle is also hardwired to respond to novel sights or sounds. (For most of human history…
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