[I think you're missing my point entirely, however. The reason that researchers "lump" spanking with other forms of physical discipline is because they are acts on the same scale with essentially the same purpose.]
Spanking as a planned consequence for certain defined forms of misbehavior is absolutely not in the same category as punching your son in the mouth because you didn't like something he said. That is just nonsense.
[Oh, and you're wasting your time spanking babies under 2. They are developmentally unable to understand consequences at all. So all they learn is to be afraid of you.]
Again, absolute nonsense. Children are incapable of understanding complex consequences. You cannot explain to a 15 month old the dangers of touching a stovetop that may or may not be hot. But the whole point of parental discipline is to teach kids which behaviors to avoid before you end up in the emergency room. If you think that warnings followed up with physical discipline don't register with children under two, you just simply haven't tried it.
And I guess you'll just have to take my word for it, but my kids are about as far from afraid of me as it's possible to be.
[As for 2-5, there are far more effective methods of teaching the child discipline.]
Such as?
[I think what you are seeing in the groups you've identified is not spanking vs. other forms of discipline, but vs. no consistent, firm, and loving discipline at all. I too, am against allowing children to raise themselves while indulging their whims.]
I'm not saying that spanking is the only possible form of discipline. But it is an effective tool to keep in the arsenal, when it's needed.
[OTOH, if you think you can trust your children, I can only suggest that you may want to rethink that belief. Children are human beings, they are driven to test boundaries, and if they're like daddy, they're smart. But don't be mad when they lie to you or steal something, or cheat at a board game or on a test. It's a normal part of growing up.]
I never said my kids were perfect. But I can and do trust them. Sorry for you if you can't.
[All you have to do is point out why lying/cheating/stealing doesn't work.]
That is all fine and good once the child is old enough to understand consequences.
[Make them perform restitution. And make them earn back your trust.]
Always.
Don't get the idea that I spank my kids for every offense. I don't think I've had to spank my youngest in about 6 months. And it's been years since I've spanked either of the older two. But with judicious use of spanking very early in life, you can eliminate the vast majority of common discipline problems most people face.