I've heard stories of this type of thing before. There was one frustrated Mom who had her son trained during the day, but getting ready for bed she'd get him in a diaper, and he'd hide behind his bedroom door, squat and deliberately fill the diaper, like it was some kind of game. Some kids actually develop a fear of the toilet for a little while.
There seems to be a lot of potty training questions on here lately, and a lot of Mom's seem to think their kids are ready when the marketing starts telling them to try the training or they want to get it done before another baby comes along. But many kids are just not ready until they are older. Some useful info I've found follows.
Signs your child may be ready:
* Your child is staying dry for longer periods of time (often two hours or more). This indicates that her bladder capacity is increasing.
* Your child recognizes when she is in the process of urinating or voiding. If you try to potty train before this time, you'll likely run into trouble, since your child isn't really aware of what she's doing and so is unable to control something she can't understand.
* Your child is able to easily pull her pants up and down. She may not have had any reason to do so in the past, but luckily, of all the readiness factors, this skill is easily learned.
* Your child can follow simple instructions. There are many steps to using the toilet that we take for granted as adults. For example-- go to the bathroom, turn on the light, pull down your pants and underwear, sit on the potty, wipe your bottom, flush the toilet, wash your hands-- the list goes on, so this is a very important skill.
* Your child is able to sit and engage in an activity for several minutes without becoming distracted or irritable.
* Your child is walking and running well. Because the urge to potty is often sudden in toddlers, and because a potty isn't always steps away, it's important for your child to be able to make it to the toilet before an accident occurs.
* Finally, and perhaps most importantly, your child shows interest and desire. Interest in keeping dry or clean. Interest in wearing "big kid" underwear. Interest in what you're doing when you go potty and a desire to do what you're doing.
Remember, age is not the most important factor. Potty training will be best accomplished when your child's physical and emotional development are taken into account as well.