I think potty training is potty training regardless of the family dynamics. (thenextfamily.com)
A potty seat or potty - chair and step stool are a main necessity item that a child needs when being potty trained. (pottypatty.com)
Today, almost 90 - 95 % of children wear disposable diapers and only about 10 % of children are potty trained by the age of 18 months. (pottytrainingconcepts.com)