Manners are important. Common courtesy is important. Especially to parents.

It’s gratifying when your kids display those traits, especially toddlers, since they are sociopaths. Nothing makes me more proud than when my son answers someone’s “Thank you,” with “You’re welcome,” or when he deploys an “excuse me” as he squeezes past someone on the stairs.

We stress that kind of simple politeness for a few reasons. For one thing, it’s a simple way to display our parenting skills. If your kid is polite, people automatically assume you’re doing something right. For another, we operate under the assumption that ingraining good manners into children at an early age will make it stick.

But does it?

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