The antagonism between words and moving images seems to start early. In August, scientists at the University of Washington revealed that babies aged between eight and sixteen months know on average six to eight fewer words for every hour of baby DVDs and videos they watch daily.

Read the paper and the press release, as well as coverage in TIME.

Update: Full text of the paper, Associations between Media Viewing and Language Development in Children Under Age 2 Years, is freely available.

Baby Einstein? Not so much.