Toilet training, or potty training, is the process of training a young child to use the toilet for urination and defecation, though training may start with a smaller toilet bowl-shaped device (often known as a potty). Cultural factors play a large part in what age is deemed appropriate, with the expectation for being potty trained ranging from 12 months for some tribes in Africa to 36 months in the modern United States.

Toilet training.
Toilet training
Toilet training
Dry pants: A rapid method of toilet training children ☆
Toilet training aid
TOILET TRAINING AID CREATING A TEMPERATURE CHANGE
Bladder capacity as measured at voiding cystourethrography in children: relationship to toilet training and frequency of micturition
A child-oriented approach to toilet training.
Pelvic‐floor therapy and toilet training in young children with dysfunctional voiding and obstipation
BEHAVIORAL ENGINEERING: TWO APPARATUSES FOR TOILET TRAINING RETARDED CHILDREN
Toilet training and toileting refusal for stool only: a prospective study.
Behavioral management of toilet training, enuresis, and encopresis.
Sequential Acquisition of Toilet-Training Skills: A Descriptive Study of Gender and Age Differences in Normal Children