Banning mobile phones creates 6.4% of standard deviation improvement in GCSE results: http://cep.lse.ac.uk/_new/publications/abstract.asp?index=4639 ….
@Alby I don't have an opinion re. mobiles and grades. I was talking about statistics.
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@KirkegaardEmil That's what I mean. Your opinion is that their analysis is flawed, and doesn't show any effect?Thanks. Twitter will use this to make your timeline better. UndoUndo
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