I understand your not wanting to push your children and wanting them to develop at their own pace, however as I sure you know, this can be extremely difficult with potty training. The way I was potty trained and the we I potty trained the kids I nannied for has worked really well, and really turns out to be just one stressful day for you and your child. You place the potty in the bathrooom and get a load of your childs favorite foods. Sit your child on the potty and no matter how much he/she tries to get up or cries, you keep sitting them back down. Feed them their favorite foods (this aids in making them have to go while making it a good experience as well), read to them etcuntil they go on the potty. I like to make up potty songs and really show them how exciting the whole thing is. But the trick is to stay in their with them until they go (even if it takes all day!). Then make a real celebration out of the use of the potty. This makes them want to use the potty. Maybe take one of their favorite toys and leave it in the bathroom so that it becomes a toy that they can only use while on the potty. Things like this really help them want to go back to the potty the next time.