this is purely in the physical sense, mentally he thinks he is 17! he wasn't interested in crawling, walking, or self feeding, though when HE decided to have a go it was like he had been an expert for years. He won't acknowledge the prescence of the toilet/potty. Mentally, he has been saying his alphabet since 18 months, can count to a hundred (all of which he has learned without prompting) and can operate DVD/computer more proficiently than me! HELP!