Let’s say we have this wonderful mom and she’s nurtured and feels safe during pregnancy. She had a rather ideal experience inutero but then the nurturing environment collapsed after birth.
This has a tremendous impact on the fourth neural structure in the human being, which is the pre-frontal cortices right behind our forehead. That’s the largest part of the whole brain. Larger than any other structure. But this grows, not inutereo where the fore-brain, what we think of as the ordinary fore-brain and hind-brain grew, which is determined by the mother’s emotional state, but the growth of the pre-frontal cortices, which is what makes us unique humans over all the other mammal species, the pre-frontal cortices grow primarily after birth because otherwise the head would be so huge you’d have real troubles with birth.