I don't know. My grandparents were the most gentle people, yet they lovingly recalled some stories about having to go get a peach switch or two. Didn't seem to hurt them or mar their characters. Who knows, maybe it even helped?
"No discipline seems pleasant at the time, but painful. Later on, however, it produces a harvest of righteousness and peace for those who have been trained by it."Hebrews 12:11
No kidding! My grandmother would use a switch on us! At the time, if given the choice, I would have probably chosen the stun gun!