Another form of the advancing state is more insidious.

Ron had turned white and Hermione shivered. Harry, himself, didn't feel safe.

The dismal witness that it bears and the cowardly counsel that it whispers are unrelated.

Maybe not always, but probably enough times to make feeling bad about mistakes an unconscious reaction.

Hare knew that we tend to jump a lot higher when startled if we're on the edge of our seats anyway.