This is interesting, and I think plausible, but I find it... surprisinging that the evidence base is so poor. Like, I know entire states have banned smart-phones now, can we see those effects yet? If it's anywhere near as powerful as the author suggests, surely we should?
The second question I have is about the outcome variable on these (but I realise I should probably just go read the damn research) - is it possible that letting people use phone teaches digital skills, at the cost of traditional spelling, for instance?
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