Originally Posted by Marzai
Spanking is temporary pain. Locking away a child will leave lifetime mental scars. It's more unfair for a child to be locked away for a long period of time.
Actually both locking away and spanking can leave mental scars, what determines if it's abuse or not is how much (and how hard) the kid is hit or how much time s/he spends locked away. There's no need do actually lock the door and there's also the option of telling s/he to stay in a corner.
Thinking better about it, the kind of punishment is the parents' decision, they should know which one works and is more suitable, it's not our decision since we don't know their kids enough.