Scientists can't yet fully explain why evening types appear to be more creative, but they suggest it could be an adaptation to living outside of the norm.
"Being in a situation which diverges from conventional habit — nocturnal types often experience this situation — may encourage the development of a non-conventional spirit and of the ability to find alternative and original solutions," lead author Marina Giampietro and colleague G.M. Cavallera wrote in a study to be published in the February 2007 issue of Personality and Individual Differences.
The researchers, who are both in the Department of Psychology at the Catholic University of the Sacred Heart in Milan, Italy, studied 120 men and women of varying ages.
A self-report questionnaire evaluated degrees of morning and evening dispositions. In fact, true morning and evening-oriented people are actually rare, since most of us fall somewhere in between.
Once the subjects were categorized into either morning, evening or intermediate types, they underwent three tests designed to measure creative thinking. More Here
No real surprise here. I'm not so sure genetics are responsible for as much of it as they think. I'd say there may be some genetic relationship to the tendency to stay up a little bit later or to get up a little earlier. But when it comes to staying up late and being more creative, I think that's just lifestyle. People that live their lives inside a set of appropriate lines of what they "should" do and seem fearful of going outside of those rules and are bitter and angry and look down on anyone who doesn't do the same; are probably going to go to bed early and get up early because they are suppose to.
It really is just another one of the benefits of homeschooling. I have one child who is just a night owl. He reads and thinks and paces, sometimes all night. Even as a toddler, he would sometimes draw all night. But since he is not in school-he is not sleep deprived and he has the opportunity to use the quiet time in the house to be creative. Of course, he is then in the dilemma of not wanting to miss out on daylight, so he puts a lot of effort into matching his schedule to ours by the time the weekend rolls around. This is a skill most people don't develop until college.
Of course, if you're reading this it's probably about 3A.M. -when I get the bulk of readers. Incidentally, Ben Franklin came up with the cute but very annoying, "Early to bed, early to rise. . ." thing but we all know he was like the all night, opened shirt, menage a' trois king even in France.