After watching a newborn from birth I have learned something that I have been wondering myself about emotions, weather we pick it up from others after we are born, or are born with them. Now what I don't know, is are they somehow learnt while in the womb as Soulfull said, or is it just natural instinct to get pissed off or frustrated when you don't get what you want, which newborns seem to have down pretty well, as laughing and smiling when they are happy, they certainly did not learn that after they came out.