How to offend moms and alienate people

It turns out a fast way to a cold shoulder — at least within a group of moms — could be sharing your opinion, even among friends.

A new study of 2,000 mothers found that one in three mothers have argued with someone about how to raise their children. And almost a quarter have felt so strongly about the situation that they are no longer speaking with the offender.

Judgmental moms are nothing new: women pass judgment on other mothers for everything from how they deal with bullying to how they do their child's hair. Some parents are criticized for giving their child a pacifier, and others get a sideways glance for taking it away too early.

Judgment happens on everything from whether a mom decides to breastfeed to whether she works outside of the home. One survey found that nearly 90 percent of moms admit to judging other moms, with the biggest reason being simply that "her kid is a brat."