The other thing I forgot!! I went to a strong-willed child seminar last year and one thing that the child psychologist said that is so perfect for Matilda is that when they are strong-willed, they have a higher anxiety level. With that anxiety level, they tend to obsess about alot more. So the higher the anxiety, the higher the obsessive/compulsive behaviour. Matilda used to get really stressed if things weren't lined up properly in the bookcase... and I mean the order of books. She can't even read. HTH!