Advocates of this treatment also believe that emotional attachment of a child to a caregiver begins during the prenatal period, during which the unborn child is aware of the mother's thoughts and emotions. If the mother is distressed by the pregnancy, especially if she considers abortion, the child responds with distress and anger that continue through postnatal life. If the child is separated from the mother after birth, no matter how early this occurs, the child again feels distress and rage that will block attachment to a foster or adoptive caregiver.