More blame-game naming is all I see
As Alan LaRue points out above, there have always been these 'studies'. And there is always some kind of blame on one thing or another.. Pool halls, games, electronics, you-name-it. Parents blame the schools, parents blame other kids, researchers blame everything under the sun. However, most of the blame is on the parents.
YES, you can let a kid be almost babysat by electronics (tablet, phone, computer, tv, etc), however, it is the parents who simply sit-back and watch it happen, instead of giving any guidance of any worthwhile sort. By far in this country (USA), parents accept the least blame and responsibility for raising their own kids, and almost prevent the kids from accepting any as well.
For those of you who read other sites like this, there have been just as many studies and reports of how gaming and electronics can enhance a kid's future. Helping them learn multitasking at an early age, giving better hand-eye coordination, and if they play the 'right' games, assisting with problem-solving, spatial-relations and more.
Again, as stated before, there's a study and a report for everything, and if they WANT to prove something. They can, it's far too easy to bias and skew any research.
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Have you worked in a coal mine? 'yes'
Have you had asbestos in your environment? 'yes'
Do you smoke? 'yes'
AHA!, you smoked, and you have lung cancer. All smoking leads to lung cancer
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No, I do not smoke, but this is the kind of idiocy I've heard of happening in some 'research'.