DVDs and Language Development

A mom asked "Can babies and toddlers learn language from DVD's or TV?" Although it might be great if you could just sit your youngster in front of a DVD and have him learn to speak and read, the research doesn't show that this works.
Researchers Fredrick Zimmerman, Dimitri Christakis and Andrew Meltzoff reported their findings in the article "Associations between Media Viewing and Language Development in Children Under Age 2 Years". They found "Among infants (age 8 to 16 months), each hour per day of viewing baby DVDs/videos was associated with a 16.99-point decrement in CDI [Communicative Development Inventory] score." and "Among toddlers (age 17 to 24 months), there were no significant associations between any type of media exposure and CDI scores."
John Medina, author of Brain Rules for Baby, discusses some of the issues in his video "Kill Your TV?" He reports research showing an increase bullying and attention disorder by first grade for every hour young kids spend watching TV.
Young children learn best from interacting with caring adults, not TV.