Erin Hannon found such a specialization in the area of music and rhythms. She says, “At six months infants respond to familiar and unfamiliar rhythms — so, rhythms from their own culture, and other cultures — equally well. By 12 months however, we find that infants have a very culture-specific way of responding to rhythms.”
http://www.sciencentral.com/articles/view.php3?type=article&article_id=218392888
