I was spanked often as a child for things i did wrong repeatedly, or if I directly disobeyed my mother, and it ended up causing a small chaotic situation. More or so if I lied or broke something. I don't think that it scarred me as a child. In fact it made me a better person. My mother wasn't rough or abusive, so it wasn't like an everyday thing, and it wasn't with anything other than a belt or an open hand. I mostly was popped. It depends on how you see it.
Most parents think its wrong to hit there children and they try to find alternatives. Others, use this method as a last resort, when time-outs, loss of privilages, etc. are failing tactics.
Personally, I think there is nothing wrong with spanking, and I'm not just saying that because I was, and have harbored no hatred for it.
It taught me a lesson. Parents that spank, do it out of love, and to establish a minimal amount of fear in their children. I noticed children that are spanked adhere to their parents more, rather than children that are simply talked to.
I'd rather spank my child along with talking it out, and inflicting a little bit of pain, that might save them from a bigger and stronger emotional pain or alot of times physical.
Spanking should be by choice. I'm expecting my first child, and me and my hubby have already established spanking to be one of many methods we will use.
First talk it out with your child and let them no what they have done can result in a negative reaction.
Warn them continuously that it is wrong.
And if you choose to spank, do so if they deliberatly disobey. That sends a mental note to a young child that doing that results in getting popped, and no child wants that!!
Good Luck