Strange things, i have baby sat for my Grandchildren from their age of a few weeks, and in the first few months after they became aware, they suddenly started to know things that they shouldn;t for that age,occassionally actually saying what sounded like a phrase, even though they couldn't talk yet.
This " been here before" syndrome slowly passes as they become more aware of their surroundings, and they partake in modern day life..I come to the conclusion, that apart from baldness, red hair, blonde hair, etc. that a load of info is also passed from the brain, so the babies are born with memories of a past life, which erodes as they age. I am certain of this 100%. maybe other people have seen this?