Epigenetics of childhood adversity (Introduction)
by David Turell 
, Thursday, October 11, 2012, 15:46 (4698 days ago)
The hippocampus is a main memory center and is epigenetically altered with methylation of DNA if there is adversity in early childhood development in rats or humans.-http://medicalxpress.com/news/2012-10-evidence-biological-embeds-social-dna.html
Epigenetics of childhood adversity
by David Turell , Saturday, October 27, 2012, 16:16 (4682 days ago) @ David Turell
The same result of the effects of childhood adversity is seen in fruit flies:-http://www.sciencedaily.com/releases/2012/10/121025130918.htm