> Prediction: like all other human behavioral traits, sleep length will turn out to be influenced by multiple genes, each with small effect. That is the consist

> Prediction: like all other human behavioral traits, sleep length will turn out to be influenced by multiple genes, each with small effect. That is the consistent finding of all human behavior genetics research in the genome-wide-association-study era. You are 100% correct. I cannot think of a single behavioral attribute that has any correlation with only a single gene. Physical traits and diseases, absolutely, many are associated with just a single gene. However! Your comment comes across to me like because it won't be just a single gene what's the point? Well because science is an incredibly iterative process and finding the first gene then leads to the second, and the third, and so on. As such, patience is a virtue for unlocking these complex puzzles. Regardless, the way most science is reported by the media - even sources who ought to now better - is insulting to science as a whole.