A new Study http://archpedi.jamanetwork.com/article.aspx?articleid=2478386
builds on a growing body of research suggesting that electronic toys and e-books can make parents less likely to have the most meaningful kinds of verbal exchanges with their children. 
The findings raise questions about whether electronic playthings make it less likely that babies will engage in the verbal give-and-take with their parents that is so crucial to cognitive development. When electronic toys were being used, parents said about 40 words per minute, on average, compared with 56 words per minute for traditional toys and 67 words per minute with books.
Kathy Hirsh-Pasek, a professor of psychology at Temple University
“A toy should be 10 percent toy and 90 percent child, and with a lot of these electronic toys, the toy takes over 90 percent and the child just fills in the blank.”
