Quote:
Originally Posted by meeera
Whether or not most people make a point of reducing brightness in dim light, the iPad does it by default.
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This keeps on getting repeated -- that the ambient light was dim. Yes, that's how the researchers categorized it. But they also gave numbers to the ambient light, and I don't think the average person would describe that as dim. I don't say that because I am familiar with the numbering system used there. I'm not. I say it because a dozen people were able to read paper books in that light for two hours straight (before the break). The study subjects wouldn't have done that if it was what a layman, as opposed to a sleep medicine physician, calls dim.
As for whether the stated lighting is what the Apple programmer for that iPad feature considered dim, I don't know. But I've read all the posts in this thread, and no one who has that iPad has done the experiment at home (admittedly some work as you need a cool white fluorescent, while most people probably have, at home, if they have any fluorescent fixture, warm white). Instead posters make the claim, without any evidence, that the stated iPad brightness is way lower than real life.
I do note and appreciate that, at the time you are criticizing the study, you, unlike some others here, don't claim the researchers are stupid or malign.
It is quite possible that if the light coming out of the iPad was dimmer, the result would have less strong. Maybe the results -- really quite strong for such a small sample -- would no longer have been statistically significant. But it's implausible to me that, with a less bright setting at the same wavelength, and a larger sample, the results wouldn't go in the same direction.