Use the checklist below to measure your toddler's progress toward readiness, and keep in mind that starting before your child is truly ready doesn't mean you'll finish sooner — it's more likely that the process will just end up taking longer.
Physical signs
Is coordinated enough to walk, and even run, steadily.
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Has "dry" periods of at least three or four hours, which shows that his bladder muscles are developed enough to hold urine.
Behavioral signs
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Can pull his pants up and down.
Dislikes the feeling of wearing a wet or dirty diaper.
Shows interest in others' bathroom habits (wants to watch you go to the bathroom or wear underwear.
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Cognitive signs
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Understands the value of putting things where they belong.
Has words for urine and stool.
Understands the physical signals that mean he has to go and can tell you before it happens or even hold it until he has time to get to the potty.