Well then I guess I don't follow the logic. I've read several posters here comment something to the effect that "I got spanked and I deserve it", so they must remember, if they can now conclude they deserved it.
(Of course what that makes me immediately think is, if you deserved it and you know you deserved it, then why would you commit the infraction in the first place, but I wouldn't expect an answer on that...)
I guess what I'm getting at is that while I remember the punishments and the angst that came with them, that memory is clear and easy to recall, but trying to remember what the infraction was that brought any of them about draws a blank. Except I do remember that the parent was enraged -- that's it.
So for me at least, the take-home message was "pain sucks". Nothing more than that. And that's meant as an answer to the OP question, "does it work?". Apparently it doesn't, or I would have remembered what the hell at least some of the "lessons" were.
There are a few responses to this.
First, different people consider spanking appropriate at different ages.
Next, I happen to have a bad memory, so I have a bias about people remembering a lot of specific childhood incidents.
I also think that we often color our memories over time, so I find it hard to trust the efficacy of someone's memories of specific childhood incidents.
I would imagine that most people were either spanked later in life than I would consider effective, or simply remember having done bad things and getting spanked in a general sense. I know I was spanked, but not how often, or for what particularly, nor do I remember any particular spanking. I imagine I deserved it at least some of the time, as children tend to do some bad or dangerous things at times.
As I've said, I get the impression you had far more than spanking done to you. I would guess that I would say you were beaten and abused, which is a far more traumatic kind of experience than simple spanking and more likely to imprint on your memory.
However, I don't think you are really grasping the idea behind spanking, or even most parental discipline. It is not about one single incident of discipline remaining with a person for their entire life. It is just a single part of teaching any particular lesson. If someone is never spanked as a child, remembers being put in time outs, but not the particular reasons for those time outs, does that mean they were ineffective? No. It isn't about what specifics you remember as an adult, it's about learning general behaviors. Don't touch a hot stove. Don't play with electric sockets. Don't run with scissors. Don't talk back to your mother. Whatever the bad behavior is, the spank is, hopefully, an emphasis to the verbal lesson rather than a lesson in itself.
So even if you have completely forgotten the reason for a spanking as an adult, if you remembered it as a child and stopped some bad behavior in part because of it, it was effective.
Again, I don't want to equate what you went through to the kind of spanking I'm talking about.