Quote:
Originally Posted by SteveEisenberg
One reason the study under discussion is better than most is the careful control of variables so that the only difference between the two groups is the reading device.
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Except that's not the only difference. The experimenters imposed different physical arrangements on the two groups, in that the iPads were held in a stand in a fixed position, at a fixed distance from the subject, and the subjects were not allowed to hold them, or adjust the position. The paper book readers had no such constraints. I don't know about you, but reading for hours in a fixed position is something I'd find physically very uncomfortable, and it could easily skew the experiment.
/JB