I'm the source. It's a personal "study" of my own behavior and IQ. My wife stays up to the same time, sleeps late, and has not shown the same decrease in IQ.

I'm the source. It's a personal "study" of my own behavior and IQ. My wife stays up to the same time, sleeps late, and has not shown the same decrease in IQ. But, here are a few mentions of study results on lack of sleep causing lower IQ and light keeping people awake: http://www.cbc.ca/health/story/1999/03/20/sleep990320.html http://www.cbc.ca/health/story/1999/03/20/sleep990320.html http://www.livescience.com/health/teens-sleep-morning-light-100216.html http://www.livescience.com/health/teens-sleep-morning-light-... And here are some alarm clocks that wake people up with light: http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=light+alarm+clock&x=0&y=0 http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dap...