Please note: This is a companion version & not the original book.Sample Book Insights: #1 The youngest child I have potty trained was 21 months old. The oldest was four and a half years old. The 21-month-old had only one accident during her potty-training time, and she was so young that she will never remember a time in her life when she was in diapers.#2 If your child has a hard bowel movement, he may be constipated. This can cause pain when he goes to the bathroom, which can lead to irrational bathroom fear. If your child is constipated or has painful bowel movements, see a pediatrician.#3 Potty training your child is a matter of how much effort you want to put into it. It can be done at any age, but it will be more difficult as your child gets older.#4 Potty training your child, especially if she is older than three and a half, may be more difficult. You will have to deal with a behavioral aspect of potty training that doesn’t come into play when you train a child at a younger age.