My son had a lot of accidents until he was around 3 and I think he didn't want to stop what he was doing, especially if he was on the computer, to take the time to go. I remember worrying a lot about this at the time and wondering if he would ever be completely potty trained.

My daughter was potty trained at about 15 months but she went to a daycare and preschool where they had about 5 little toilets in a row and she got to go with friends. I don't know if it was competition to see who could go first or if it was because she got a reward if she went or what but I was glad I didn't have to spend any more money on diapers because I really couldn't afford it.