My son will be 4 in June. His Dad and I divorced when he was a baby and he doesn't adapt well to change. I am concened about his behavior in social environments. I spoke with his preschool teacher today and she said when all of the kids go outside to play, my son just wanders around looking at the ground, not interacting with anyone. He goes to preschool twice a week. When we go to the park, he sits back and observes for a while before he will go play. If another child goes in the area that he is playing in, he will go somewhere else. He will play fine if he is with another child that he knows. I take him to a playcenter everyweek to meet his cousin (the same age) and if we get there before his cousin does, he will wait to go play in the playcenter until his cousin arrives. Once he is there, he does great. I just don't understand this behavior. Is there something developmentally wrong with him?