This book simply didn't work for us. Many times my 2 year old son would throw a tantrum because he didn't know what he wanted. Example: "I want juice Mama" I give him the juice. He falls out on the floor crying. "I don't want juice anymore." I take juice and put it on the table. "I want juice Mama." AAAAHHHH! I couldn't "caveman talk" because neither my child nor myself knew what he wanted. The other parts of the book were to shallow. I really liked John Rosemond's making the terrible twos terrific.