chohan - the member who asked this question - selected this as the best answer posted by another Education.com member.
from a fellow member
Playing babies, house, doctor, restaraunt, police, etc. Socially children will be talking about their particular role playing parts. They will gain knowledge in the selected area and then emotionally can can release their feelings in such characters. If one child had poor experiences with a certain character then they can work their feelings out through expressive play.