If you spaced the births of your children so that the first child would be out of diapers before the second child arrived, you may be in for a surprise.

It's not uncommon for a fully potty trained child to revert to bedwetting or having daytime accidents when a new baby arrives.

Potty training regression in cases like this is usually caused by a child's emotional stress and insecurity.

The arrival of a new baby - who occupies the attention of parents, grandparents, and pretty much everyone else - makes an intense impression on a child.

Older siblings can't help noticing how much time adults spend changing the baby's diaper, and how they coo and play with the baby during changing.

Often children decide that acting like the baby is the best way to get that attention fully focused back on them again.

Bedwetting or having daytime "accidents" is one of the most babyish things an older child can think of doing.

In this scenario, the best solution to potty training regression is to spend additional time with your older child, talking, listening, and cuddling.

Reassure your child how very much you love her, and emphasize that the new baby can never change your feelings for her.

While your household adjusts to its newest member, continue to spend as much extra time as possible with the older sibling.

For example, when you're feeding the baby, you can have your older child cuddle up next to you for storytime, a movie, or quiet playing.

You can also show your older child that you value "big kids" as much as babies by pointing out to her what a wonderful help she is, all the big kid things she can do that the baby can't, and how well she can do things like coloring.

The bedwetting and daytime accidents should stop when your older child feels secure in her place again.

But if not, you may want to check with your pediatrician for assistance.