potty training timing is so individual with each child and also with what's going on in the family. My 4th child, who is smart as a whip and so verbal and kind of mature for her age of 3 (July 30th) just decided to go on the potty a few weeks after her 3rd birthday(I thought she was going to be a early trainer). I tend to try and get the gear ready-have the potty and or potty ring available. Encourage them to go but I liked the Pediatrician, T. Berry Brazelton, who said, it has to be their accomplishement. It seems like sometimes there's different windows of oppurtunity also. Personally, I liked the age 3 potty training because they seem to understand when they need to go and go on their own without having to be reminded, less likely for accidents. Also, I hate public bathrooms with little ones, so I was okay with it being slightly older. I was always careful not to let them feel like I was disappointed in them. I would give them praise if they were successful, sometimes a reward if I happened to have any treats in the house-but nothing set in stone. My most recent potty trainer was having a hard time going #2. She didn't like to for some reason. So sometimes after a success I'd give her a hershey's kiss or a jolly rancher. She's doing fine now, but had me a little worried there for a bit. good luck-LaurieK