Sigh...whenever I see studies like this, I get worried about what they controlled for. Or in this case, what they didn't. If they're looking at Euro-Americans, then there is a cultural component alongside the genetic component. Can they really claim that genes for eye color are responsible, and not the socialization that occurs as a result of being in a cultural group that is predominantly light-eyed?
Sigh...whenever I see studies like this, I get worried about what they controlled for. Or in this case, what they didn't. If they're looking at Euro-Americans, then there is a cultural component alongside the genetic component. Can they really claim that genes for eye color are responsible, and not the socialization that occurs as a result of being in a cultural group that is predominantly light-eyed?