In guilt cultures, social control is regulated more by guilt than by shame, as is the case in shame cultures that exist in most parts of the world. A crucial difference between these types of cultures is that while shame cultures require other people to shame the wrongdoer, guilt cultures do not.
I see a sentence like this, EXTREME OVERSIMPLIFICATION WARNING goes off in my head and I don't read further.
Related: The Psychological Diversity of Mankind, An African Folktale, many of the more interesting infanticide & abortion debates on this site
A fascinating post that however might need some background reading, most relevant material is linked in the article itself. I encourage reading up on the material.
Link to article.
Stories about changelings replacing babies and the recommended course of action being basically to expose the child is not a human universal, they are found only in European cultures. These rely more heavily on guilt and less on shame to regulate behavior than most other human societies. This may not be a coincidence. The stories look like they work as a ready made rationalization to reduce guilt from infanticide. Common problems often acquire common solutions like this.