Originally Posted by murraypaul
I think Harry's question is: Has it been shown the using backlit displays affects sleep patterns, or has it been shown that using a display of a particular brightness affects sleep patterns? If you shone a bright enough light onto a reflective display so that the light output equaled that of the backlit display, would there be any difference?
If the study was done properly (and I haven't actually tracked it down and read it), they should have controlled for brightness levels. Based on the researchers I work with, I'll give the people that did that study the benefit of the doubt that they did unless I see otherwise. I've sat through enough talks and job talks in my department to know that someone that didn't do that would likely be skewered and roasted slowly over the coals.
Bah, now I think I'm going to have to spend some time tracking it down to read it.