Anyway, I felt the weight of the Bible and so I told Shannon, “OK, no spanking here. Meet me at the end of the airstrip and pick another switch along the way. I will meet you there in five minutes!” As Shannon started out of the house, Pirahãs asked her where she was going. “My dad is going to hit me on the airstrip,” she replied with a mix of irritation and glee, knowing what the effect of her words would be. Pirahã children and adults came running behind me when I left. I was defeated. No more spankings around the Pirahãs.
If a culture of people with no knowledge of modern psychology or science also think it's a bad practice, then that should really give you a hint...
