I know a few parents who have been determined that their child should be dry by age 2, they started trying at about 22 months (maybe later) but when the child clearly wasn't ready.
Six months on they are still going and have made little progress, I think it's because when they started the little one had no chance but was just changed every time they had an accident and encouraged to use the potty, I think this must only stress the child and when it comes to the age they might be ready there is no place to start from and they just carry on as before.
I'm not saying that my children were the average difficulty to potty train but I started when they showed an interest in the potty, a dislike of the nappy and could hold it for a bit (about 2 1/4 to 2 1/2) and it was done within a week.
Would anyone like to say how they did it and how well it went?