From the Chronicle of Higher Education:
“Developmental psychologists have long been interested in children’s appreciation of the distinction between pretense and reality. We know that children who have reached their fourth birthday tend to have a relatively sophisticated understanding, because when we ask them straight out about what is real and what is pretend, they tend to get it right. What about younger children? Two-year-olds pretend to be animals and airplanes, and they can understand when other people do the same thing. A child sees her father roaring and prowling like a lion, and might run away, but she doesn’t act as though she thinks her father is actually a lion. If she believed that, she would be terrified. The pleasure children get from such activities would be impossible to explain if they didn’t have a reasonably sophisticated understanding that the pretend is not real.”