Holy cow, I wrote a book!
It is generally accepted that
language exposure in the first year of a baby's life is important.
To what certainly must be the dismay of couch potatoes everywhere,
researchers at the
University of Washington
determined that it's
particularly important that it come from a live human being.
Watching DVDs doesn't have any effect.
What was particularly notable to the researchers was that
even just five hours of exposure made a significant impact.