Many toddlers are ready for toilet training after their second birthday, but early training is possible with some children. If a child is capable of following directions, shows an interest in imitating family members in the bathroom, experiences bowel movements on a regular schedule, and has a diaper that is not always wet, they may be ready for toilet training. Although early potty training is convenient, it may place unnecessary pressure on a young toddler and is generally accomplished more quickly with older children.
References:
Shelov, S. P. (Editor-in-Chief). (2004). Caring for Your Baby and Young Child: Birth to Age 5. The American Association of Pediatrics. Revised edition. New York: Bantam Books.