You need to read Dobson's books then. He argues against physical punishment except in cases of extreme disobedience. Physical punishment is reserved for rare times so that it has an effect.
I think you mistake Dobson for someon else.
I have read his books. You are correct. He does not call for child abuse. It is his readers who misunderstand what he does call for. There are many such.
If your book is misunderstood, then it needs a thorough going over. Indeed, he has altered it from the first edition...considerably. Go find the first printing and read that.
Having seen the results of his book, I have little patience with it any longer.