I hear frequently from parents who are trying to toilet train that the child is having some success. Namely, parents will say the child has learned how to pee on the potty, and has no wet accidents.

ERIC, the children's bowel and bladder charity, answer commonly asked questions about potty training, including when to start potty training, what to do when your child won't poo and more.

Q: Potty training advice needed: Our son just turned 3. He's great with peeing, except he still wears diapers for sleeping. We are struggling with pooping. He knows he's supposed to go in the potty.

A successful bowel movement has three requirements, according to Harvard physician Dr. Trisha Pasricha.

"Stool toileting refusal" is quite common—here's how you can get past it. Rachel Fairbank is a freelance science writer based in Texas. When she is not writing, she can be found spending time with her ...