@article{ref1,
title="Violence: innate or acquired? A survey and some opinions",
journal="Journal of the American Academy of Psychoanalysis and Dynamic Psychiatry",
year="2004",
author="Bacciagaluppi, Marco and Bacciagaluppi, Marco",
volume="32",
number="3",
pages="469-481",
abstract="Freud's psychoanalysis and Lorenz's ethology consider human aggressiveness to be innate. According to recent archaeological excavations and evolutionarry studies, human groups in the Upper Paleolithic and Early Neolithic were peaceful and cooperative. This culture was replaced ten thousand years ago by a predatory hierarchical structure, which is here viewed as a cultural variant.",
language="",
issn="1546-0371",
doi="10.1521/jaap.32.3.469.44781",
url="http://dx.doi.org/10.1521/jaap.32.3.469.44781"
}