Whether or not you remember it, Fourl29, the study was done using tablets set to the highest brightness, so I'm not sure what there was in my first paragraph to "disagree" with.
http://www.researchgate.net/publicat...in_suppression
These are clearly not real-world conditions.
You can read more about the study here:
http://news.rpi.edu/update.do?artcenterkey=3074