Bedtimes and wake-up times for Americans in their 20s by IQ.
Very Dull (IQ < 75)
Weekday: 11:41 P.M.-7:20 A.M.
Weekend: 12:35 A.M.-10:09 A.M.
Normal (90 < IQ < 110)
Weekday: 12:10 A.M.-7:32 A.M.
Weekend: 1:13 A.M.-10:14 A.M.
Very Bright (IQ > 125)
Weekday: 12:29 A.M.-7:52 A.M.
Weekend: 1:44 A.M.-11:07 A.M.
Sources
Why Night Owls Are More Intelligent than Morning Larks | Psychology Today
Intelligence: The Evolution of Night Owls | Psychology Today
Looks very interesting.
Very Dull (IQ < 75)
Weekday: 11:41 P.M.-7:20 A.M.
Weekend: 12:35 A.M.-10:09 A.M.
Normal (90 < IQ < 110)
Weekday: 12:10 A.M.-7:32 A.M.
Weekend: 1:13 A.M.-10:14 A.M.
Very Bright (IQ > 125)
Weekday: 12:29 A.M.-7:52 A.M.
Weekend: 1:44 A.M.-11:07 A.M.


Sources
Why Night Owls Are More Intelligent than Morning Larks | Psychology Today
Intelligence: The Evolution of Night Owls | Psychology Today
Looks very interesting.