I know you believe this to be true, but I have never seen a single honest study on the issue. Every study I've ever seen contains loaded words like "beating" and "hitting," and equates them with spanking. Reading such a thing in a supposedly scientific study is as jarring as seeing the words "unborn baby," "killing," and "murder" in a supposedly scientific study of abortion. When I see this language, I know already that no actual science has been applied.
Abusing children is definitely harmful in all the ways you list. But I've never seen a cogent or rational argument which concludes that all spanking is abusive. In fact, I've never seen any attempt to study conscious spanking as opposed to unconscious abuse. All the studies in the area appear to begin with the unsupported premise that all spanking is abuse.
One thing I am curious about (and I hope some people can answer not in passion because I'm genuinely curious) is the decision to draw a line between spanking and any of the mean words. The position that spanking is not hitting because it is just spanking and is not the same.
I'm not a passionate anti-spanker, but I do have the same puzzlement over it as I have over religion. So here are my questions that I would like the okay-with-spanking posters to illuminate for me if they would:
- If spanking is clearly different than hitting to both you and the child - i.e. it doesn't hurt - (is that true by the way? Is that how you tell the difference?) how did you establish that the spanking was a message of behavior change to the child? How did your child come to know that a "swat" was something to avoid?
- What explanation do you give to the child you are spanking that teaches them it is your tool and they are not allowed to use it on their little brother? And why is that explanation easier to give than an explanation of what they did wrong in the first place?
I was spanked as a child, and when it didn't "work" it was escalated until it ostensibly did. From hands, thence to hair brushes, thence ping pong paddles, then wooden spoons and finally a two-by-four. And yeah, my siblings and I still call the two-by-four incidents "spankings" since that's what we were taught to believe the "just" were.
I was all set to spank my own children but my husband objected and I agreed to try. As I worked through the ways to avoid it, it became more and more clear to me that it wasn't going to have been terribly effective anyway, and the
undoing of the message that it is okay making a rapid arm movement connecting with other people's bodies to send a message would be ultimately more difficult than making blanket statements, "rapid arm movement that connects to other people's bodies with the intent to cause displeasure or annoyance to get them to act as you wish" is just never okay in the first place.
And that teaching without spanking was actually easier than teaching with spanking anyway. With spanking I would have to spank the lesson and then un-teach the spanking lesson. The other way, I only had to teach the lesson.
And here are some of the ways that were effective for us and our extremely active (some say autistic for one of them, but that is in dispute and is less and less in evidence as the years go by,) curious, rambunctious children.
Biting: age 8 mo - separate from others. Say over and over, "but you can't go back there while you bite" and act again and again, a big dramatic attempt to bite, and being pulled away, a big dramatic closed mouth and being brought close. Also "yes bite this duck, no biting people. Yes bite the duck, no biting people" and have for him always the things that he can yes-bite. When the mouth opens, shove the duck in it.
Running in street: (really rare given where we live but we practiced anyway) repeated games of red-light, green-light where they got to learn that stopping on command could be fun and in their own interest! And practice it until it is habit. Who can stop the fastest? RED LIGHT! and they stop every time. They are smart enough for this as soon as they can walk.
Shouting in a store or anywhere - stand in front looking at them,

with your hands up and ask, "what are you thinking will happen when you do that?" and respond not that they won't get their way, but they simply
can't and there's nothing parent can even do. "How can I buy cookies when we haven't had lunch yet?"
General discipline - teach them language and words to help communicate their needs so there is no need to tantrum. Simple, short, go-to phrases that are kid friendly that
work for them.
These are not magic, and they are only a few examples, but there are many books on these subjects from which I gleaned hundreds of techniques - almost all of them based on successful communication with children who are not yet good at it but want to be. Almost every book on autism that I read struck me as something that all those parents of "normal" kids needed to read
and fast! because they really are studies of
how the child's brain works and once you are willing to learn their language and speak it, you no longer have a poor communicating child.
(reminds me of that joke, "so you think you're smarter than your dog? How many human words does she know? And how many dog words do you know?")
I feel that when I see parents frustrated with children that the parents seem to want to control better than they are right then, that the techniques I used to get inside my child's head and speak from there are exactly the tools that would help them.
(And spanking was never in my child's head.)
I have seen children try to spank other children, especially smaller ones; children who come from spanking families. Perhaps because they have been taught that the way to change other people's direction is to rapidly swing your arm at them and try to connect with force.
I have seen kids who were not spanked try to stand and reason with other children.