LydiaB, I don't know anything about encopresis (spelled right?), however, my son went regularly in a diaper until he was 4.75 years old. He would ask for a diaper, and then poop. At the time, I read about it, and also asked Dr. Sears, who said that this was still in the norm. Perhaps, your ds has a physical problem and I'd look into it. I just want you to know from what I know, for alot of kids, bowel movements are a big deal and take longer then you'd expect to train. My ds just wanted a diaper to go in, but I understand that alot of kids, especially boy, go in their pants. Some kids even intentionally hold their poop in. Anyway, I was given alot of hassle from inlaws and I just want you to know you are not alone. My ds finally decided to go in the toilet and hasn't pooped anywhere else since. It was just when he was ready. Good luck!