And how do you keep the focus on the child rather than the behavior?

God knows she hadn't always been on her best behavior with him.

Or people may actually be on their best behavior for a while.

Well, the only thing she could do was be on her best behavior in the morning.

Like she was trying to be on her best behavior.

So he did his best to stay on good behavior.

Come to think of it, she'd never been on her best behavior with him.

That would leave the rest of us on our best behavior, which is pretty much where we already are.

All evidence points that they were on their best behavior.

I expect you to be very much on your best behavior.