"If you think about the world of a preschooler, they are surrounded by stuff they don't understand-things that are novel. So the driving force for a preschooler is not a search for novelty, like it is with older kids, it's a search for understanding and predictability," says Anderson. "For younger kids, repetition is really valuable. They demand it. When they see a show over and over again, the not only are understanding it better, which is a form of power, but just by predicting what is going to happen, I think they feel a real sense of affirmation and self-worth. And Blue's Clues doubles that feeling, because they also feel like they are participating in something. They feel like they are helping Steve."