Race & Daytime Sleepiness

Are African-Americans sleepier than whites?Both a 2003 study and a 2006 study reported that African-Americans have higher scores than whites on the Epworth Sleepiness Scale. The ESS measures how likely you are to fall asleep in eight common situations.Why might African-Americans score higher on the ESS? It could be that they are more sleep deprived than whites; or perhaps they are more likely to