It’s a Korean old wive’s tale that a calm pregnancy produces a calm and contented baby. There is research that seems to support this as the Fight or Flight hormones possibly affect the fetus. I’m not sure if this is true but this is the tale of my three pregnancies and outcomes.
It was 10 years ago, but I read over 15 baby parenting books and this is the list that I can recall. Some are favorites and some are pans.