Most likely well-paid babble.

Children who watch a lot of TV have the kind of parents or caretakers who let them watch a lot of TV. That probably explains a lot.

and that DOES make a difference

to the point that it's measurable later on in childhood, which affects reading ability. Turn off the tv - for your kids and yourselves, especially when the kids are near you, and TALK TO your children

A little more on rainy or cold days when we can't hit the park or backyard, less when it's a library or playdate day. Specifically, she LOVES Dora the Explorer. However, I sit there with her and talk to her as the show progresses, asking her questions about what's happening on the screen and acting as interested as possible about the story. It has really seemed to improve her vocabulary and speech, and gives us more bonding time.

I could not even imagine letting her veg out for hours at a time, just staring at the screen with no communication.

That review being how the press reports science.

Grasping at Elephants: Reporting on Kids Media Research
http://www.huffingtonpost.com/david-kleeman/grasping-at-elephants_b_2965359.html

Good links in this piece, too.