Parents of infants and toddlers should limit the time their children spend in front of televisions, computers, self-described educational games and even grown-up shows playing in the background, the American Academy of Pediatrics warned on Tuesday. "What we know from recent research on language development is that the more language that comes in — from real people — the more language the child understands and produces later on," said Kathy Hirsh-Pasek, a professor of psychology at Temple.