When the TV was on, the researchers found, both the quantity and the quality of interactions between parents and children dropped. Specifically, parents spent about 20 percent less time talking to their children and the quality of the interactions declined, with parents less active, attentive, and responsive to their youngsters.
Children under 3 can't learn action words from TV - unless an adult helps
Without adult support, children under age 3 could not learn the words directly from the program, nor could they understand them when they appeared in a different context within the video.