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Male Aggression and Violence in Human Evolution

In the last few decades, new sources of evidence have continued to indicate that male violence has played an important role in shaping behavior in the human lineage. The frequency and nature of such violence varies widely among populations and over time raises questions about the factors responsible for the variation. In the past, much controversy and even some acrimonious debate has occurred over the question of whether humans lived in a state of ancestral peace. The aim of this symposium is to set aside such theories and debates and take a fresh look at the causes and consequences of variation in aggression, both between and within species. The focus will be on speakers who can critically examine and represent the available evidence from multiple sources, including comparative ethology, ethnology, archaeology, political science, and evolutionary neuroscience. While the symposium may not come to any definitive conclusions, it should allow for the best interpretation of the current evidence, and help suggest research agendas for the future. (from carta.anthropogeny.org)

The Parallel Evolution of Humanity and Savagery. Human male violence is paradoxical. On the one hand, within social groups there is a strong tendency for avoidance of direct conflicts such that confrontations between angry individuals or groups normally end without serious harm. On the other hand, our species has a consistent history of intense deliberate violence, ranging from planned homicides and low-level and long-lasting warfare among nomadic hunter-gatherers to massive intermittent conflicts among states. Richard Wrangham (Harvard Univ) shows that the combination of aggression styles is better understood as being due to two neurobiologically distinct patterns that have been subject to contrasting selective regimes. He concludes that the combination of these two styles of aggression makes humans well adapted for both war and avoidance of war.

8. The Parallel Evolution of Humanity and Savagery


Go to the Series Home or watch other lectures:

1. Warfare and Feuding in Pleistocene Societies
2. Intergroup Violence: Chimpanzees and Lions
3. Neuroendocrine Mechanisms Underlying Male Aggression
4. Bioarchaeological Perspectives on Male Violence in Prehistory
5. Male Violence among Ache and Hiwi Hunter-Gatherers
6. Resource Unpredictability, Socialization and War
7. Violence: What's Culture Got to Do with It?
8. The Parallel Evolution of Humanity and Savagery
9. Do Hunter-Gatherers Tell Us about Human Nature?