I know this is an odd question, but when we had sleep problems with my 6 month old daughter I scoured books by Dr. Sears, LLL, and Elizabeth Pantley.
I came across a passage that said babies in other cultures cry less because their needs are being met. I also remember something about a passage about spoiling was translated into their language and the mothers said it was nonsense.
Does anyone know what book this is from? I'm writing a paper on this topic and I can't remember where I read this! I've been searching for ages.