I hate to take this on, but this is one area where nice, normal people go crazy, so I might as well join in. The craziness seems to be most acute in America. Not to pick on anyone, but here is a lovely blog post that describes, and pictures a wonderful “prepared environment” for self-toileting: http://midwestmontessori.tumblr.com/post/108937575341/toilet-learning-phase-2
Really, it could not be better set up! My concern is that the procedure is very adult dependent. Has anyone noticed how oppositional toddlers can be? Of course, the main pit that all adults fall into is that of providing too much, or not “helpful” help to children. I certainly did this with mine. I would give you more details, except that my adult children probably would not appreciate this over-sharing.
“Montessori” is about prepared environment, teaching skills, and allowing independence to develop…independently.
That is, what skills are needed in self-toileting? Undressing, dressing, reaching the toilet, how to sit on toilet (boys), where to put soiled clothing, how to “wipe” effectively, how to wash hands, how to reach sink. These can all be taught: the rest is internal: when do I need to “go”?
We want the “when” to be in the child’s control. If not, there are two directions that can lead to great distress: #1 the child is convinced that they cannot know when and how to “go”, so they remain dependent on an adult to tell them “when”, and, perhaps, go with them. (I cannot begin to tell you how many horror stories: the child will not poop unless his head is on mom’s lap, the child will prefer to poop in pants than to attempt to wipe, the child will not go to bathroom alone, the child who will not use toilet unless mom sets an alarm on her watch to remind her, the child who will pee in toilet but must poop in diaper…)
OR #2 so to speak: child is in power struggle with reminding/cajoling/reminding/helping/ well-meaning adult. (More horror stories: child who holds urine until adult arrives, and pees on adult, child who pees in anger on toys, child who stays non-independent for years and years, impacted feces…)
So, prepare the environment, and prepare the child. Children can participate in undressing , and dressing from well before they can sit up. http://www.janetlansbury.com/2010/05/how-to-love-a-diaper-change/ As soon as they can stand, they stand and help in changing. Then, when you feel they are ready, and they have all the skills needed, let it be their learning. That is all you CAN do, in reality. We cannot make children eat, sleep or eliminate.
Here are some words from Jane Nelson of Positive Discipline: http://blog.positivediscipline.com/2008/03/potty-training.html
Oh, and, equally important: believe that they can!