When to start potty training? What is the right age for potty training?

There is no set age at which potty training or toilet training should begin; the right time depends on your child's development and readiness. But don't worry, there are ways and signs to tell if your child is able and ready to be potty trained.

Potty Training Readiness - 4 Signs of Child Readiness:

  1. physiological development (bladder and bowel control)
  2. motor skills
  3. his/her cognitive and verbal development and
  4. emotional & social awareness.

1. Physiological Development (Bladder and Bowel Control):

In order for your child to be able to eliminate when s/he wants to (voluntary vs. involuntary), her/his sphincter muscles have to be developed / mature enough to delay excretion for a brief period of time. All my research including the American Academy of pediatrics say that children's elimination muscles reach full maturity somewhere between 12-24 months, and the average age of maturity is 18 months.

So how is a parent to know if a child's elimination muscles are mature?

Your child's behavior and actions will guide you in knowing how your child is developing in this area.

Around his/her first birthday, your child will begin to recognize the sensation of a full rectum or bladder, signaling the need to eliminate. You observe this awareness through their behavior of squatting and grunting when having a BM and tugging at the diaper when urinating. At this age, they may not be able to delay elimination, but they need to make the connection between the feeling of fullness and the act of excretion or urination.

On the average, at about 18 months, your child's sphincter muscles mature and now your child has the ability to delay excretion for a brief period of time. Night time bowel control is usually achieved first, followed by day time bowel and bladder control and finally nighttime bladder control. (see potty training at night)

You will notice that your child will no longer have bowel movements at night. Then you will observe that your child can stay dry for a few hours at a time. Your child will wake up dry from long naps, followed by waking up dry in the morning.

Physiological readiness signals for potty training are (Bladder & Bowel Control) :

  • Childs awareness of the need to go - demonstrated by squatting, grunting, hiding when child feels need to eliminate.

  • No BM's through the night

  • Dry diaper for long periods of time i.e. from long naps and/or in the morning.

  • Urinate a lot at one time (vs. a little through out the day)

  • Some regularity of bowel movements.

So, if you think your child has full bladder and bowel control, should you start potty training?

Not necessarily.

Just because a child is physiologically ready to be potty trained does not mean that s/he has the other skills - motor, cognitive & verbal, emotional & social skills required for the whole potty training process.

2. Motor Skills:

On the average, children will walk around the age of 12 months. Once your child has mastered walking and running, then s/he may be interested in acquiring other "grown up" skills and will start developing other gross and fine motor skills required for potty training. The main motor skill is having enough finger & hand coordination skills to dress and undress and more specifically to pull his/her underpants down and up.

Motor Skills readiness signals for potty training are:

  • Is your child able to undress him/herself?

  • Is your child able to pull his/her underpants down?

  • Is your child able to pull his/her pants down?

3. Cognitive and Verbal Skills:

The overall potty training process requires a complex combination of physical and cognitive tasks. Your child has to learn and become familiar with his/her body and functions, associate the physical sensation with the proper response, picture what s/he want to do, create a plan to get to the potty, get there, remove the underwear and then begin to use the potty. Then s/he has to remain there long enough to finish, which requires memory and concentration.

As you teach your child all these steps, your child must have the ability to understand your explanations, commands and responses and to be able to put them all together to understand the entire potty training process.

When you look the process at this detailed a level, you can see why your child has to have some of these cognitive and verbal skills developed to be able to successfully learn what is required.

It starts with body awareness and the ability to associate a feeling of fullness with the result i.e. a BM or urination. This association is not made automatically. You need to reinforce this association by telling your child what is happening based on your observations.

At around the age of 2, children become aware of their body parts and it is your role to teach your child the words for the body parts. Use words that are comfortable to you and your family. This is also your opportunity to teach your child all the other words that will be required in the potty training process.

The next steps in the potty training process require your child to have the capacity for symbolic thought, planning or problem solving and memory. Your child has to be taught that when s/he has the urge to go potty, that they should find their way to the potty, remove their clothing and then eliminate in the potty.

The child has to have the ability for more complex thinking and have the ability to extrapolate and problem solve. They have to be able to learn that they need to stop doing whatever they are doing when they feel that fullness. Then they have to figure out where the potty is and find their way there.

Verbal and Cognitive readiness signals for potty training are:

  • Has the vocabulary required for potty training - i.e. understands words such as pee, poo, penis, vagina, potty, toilet, wet, dry, underwear, "big girl" etc. or whatever words work best for your family

  • Your child can follow instructions - from simple instruction such as show me your nose, to more complex instructions such as putting away toys where they belong. Your child has the ability for symbolic though, planning/problem solving and memory.

  • Is able to imitate and model behavior

4. Emotional Growth and Social Awareness:

This is probably the hardest readiness to gauge, especially since children go through phases. The components that will help in determining your child's emotional and social readiness are self mastery, desire for approval, and social awareness.

The desire to master one's own body and environment is a powerful desire common to all toddlers and preschoolers. You will hear toddlers say "I can do it" and "I am a big boy/girl now" are indications of the desire towards independence.

Sometimes, the need to control one's own body and environment are manifested in undesirable ways such as hiding when s/he has the urge to have a BM, or having an poop accident for the sheer satisfaction of making the decision on where to go potty or withholding stool (aka nonretentive encopresis) and becoming constipated. When your child is in this phase of self mastery, back off and try again later when s/he moved into the more positive phase of self mastery.

Parents often underestimate the power of a child's desire for parental approval. As an adult, think about how you feel about your parents. Do you still care about what they think about you? Do you still want them to be proud of you? Most children have this desire, except for normal spurts of rebellion that occur throughout childhood. This desire to please parent and get parental praise and approval is a great tool that can assist in the process of potty training.

Social awareness is the ability to observe others and the desire to be like them. At the age of 18 months, children become fascinated by the behavior of other children their own age or older. This is why often the 2nd and 3rd child is potty trained a lot earlier than the first child. By the age of 24-30 months, they start to understand gender differences and focus on imitating the behavior of the same sex parent.

Emotional growth and social awareness readiness signals for potty training are:

  • Desire to master one's own body and environment - manifested by "I can do it" or "I am a big boy/girl now"

  • Child's desire for parental approval

  • Child's desire to imitate and desire to be like others

Article Categories

Related Articles

Add Your Comment There are currently 36 comments on this article.
Add yours? >>
Potty? (5/18/2014) Reviewer: Karen (lincoln, ne)

First of all we never used the term 'Potty' it's common and I do mean that in the pejorative. Second, if you're still changing diapers as much after 24 months, it's your fault or the child is delayed. By two, if they're not themselves vocal, they understand the spoken word. Just tell them, 'use the toilet or wear diapers' They choose the toilet every time.

Devan, awful parenting (5/12/2014) Reviewer: Amanda


You should be ashamed of yours and your wife's actions, not declaring them on the internet.

As the commenter below shares, you recognize your actions could upset others yet you think nothing of humiliating your young daughter in this way. Horrid.

Devan (11/29/2013) Reviewer: Bee

You should not be parents. I feel sorry for that little girl. I can only imagine how she was made to feel. She was forced and intimidated. I only hope you aren't doing more awful things to the little thing.

You state people won't like it which means perhaps you know deep down you are horrible.

Potty Training (9/26/2013) Reviewer: Jessie (YORK, PA,) One of my nephew aunt has been potty training her daughter since she was one month sitting her on the toilet and holding her there until she goes and bragging about how it saves her two diaper in the night time she three month old now and she finally bought her a potty seat off amazon .com I think she nuts
Potty training tips from a toddler teacher (7/17/2012) Reviewer: Keri (Manxhester , Nh)

I am a toddler teacher of two year old's. Potty training is my thing.

Parents, try to stay away from bribes or snacks. It is a very easy way to train a child but try a potty sticker chart. When potty training a child, it's important to be consistent. Bring the child every thirty min's. Praise them when they go and when they don't go let them know it just wasn't working.

You never want to make potty training a negative experience. It should be a positive and fun adventure for you as a parent and for the child.

View all 36 comments >>