Here is the first book that helps you interpret your children’s behavior by letting you know what they are thinking Dr. Lynn Weiss, a nationally recognized expert on child development, has created a unique new book for parents. It explains why babies, toddlers, and preschoolers behave the way they do: — Why does your baby fuss, cry, and squirm when you try to hold him? — Why does your toddler act self-centered? — Why does your child misbehave? — Why does your child constantly test the boundaries of parental control?