A friend of similar vintage and I were in a restaurant witnessing a very badly behaved child whose parent was ignoring said behaviour . We both looked at each other and said" that child needs a good smack! " . I don't think smacking is a good thing, but I can understand how a parent at the end of their tether may resort to it. I also think a smack, or threat of a smack, can stop a child from further destructive or inappropriate behaviour. I am not advocating smacking, if other strategies work, but I did smack my youngest son, who did behave appallingly towards his younger sister in particular. it was like world war 3 in our house for a few years, they couldn't sit in the same room without him launching a viscous attack on her , and if prevented from that he would maliciously break her toys. He is now a lovely adult, and has a great a good relationship with his siblings . But he did drive me to distraction for a while. There is a Jamacian saying " if you don't hear, you must feel" - that is, if you don't listen to what I am telling you, then you will feel my disapproval.