http://digbig.com/4fkbw
"Children who come from unloving homes experience physical, as well as psychological changes, says new research.
A study carried out by psychologists at the University of Winsconsin-Madison found that the absence of a loving caregiver in a child's life could affect the levels of two hormones called vasopressin and oxytocin, both of which are essential in a child's ability to form social bonds and develop emotional intimacy."
Early experience in humans is associated with changes in neuropeptides critical for regulating social behavior
Proceedings of the National Academy of Sciences
Alison B. Wismer Fries, Toni E. Ziegler , Joseph R. Kurian , Steve Jacoris and Seth D. Pollak
PDF - http://www.pnas.org/cgi/reprint/102/47/17237.pdf
