The American Academy of Pediatrics falls squarely in agreement with the second answer. They recommend no TV or screen time at all for children under eighteen months, and no more than an hour a day, ideally consumed with a parent, for older children. In addition, they recommend choosing “high-quality” programming, such as that featured on PBS. That would include Sesame Street, although it would also include less learning-focused shows, such as the parent-despised Canadian-export Caillou.
