Nathan Likes Peek A Boo; Doesn't Initiate the Game
Though Nathan appears to enjoy a game of peek a boo, he lacks the flexibility and reciprocity expected in a typical developing child his age. Specifically, he makes no effort to keep the game going or to play both parts of the game (i.e. both hiding and finding). Such limited ability to play a social imitative game, like peek a boo, is a risk alert for autism.