The prehistoric psychopath

 

‘Comprehensive new research has emerged with much more archaeological data on violence in prehistory. Analysis indicates that prehistoric hunter gatherers were considerably less violent than is commonly believed. This finding also seems to be borne out by ethnographic data on modern hunter gatherers with lifestyles relatively similar to their prehistoric ancestors.

Hunter gatherers were not non-violent noble savages by any stretch of the imagination. They were relatively violent when compared with modern standards and even when compared with rates of violence experienced by other primates and mammals in general. However, we think this is primarily because human conflict is so lethal, not because it happens so often. On the contrary, hunter gatherers typically exhibit non-violent norms, with amoral and atypical sociopaths accounting for a disproportionate share of violence, just as in our own societies today.

Understanding this matters. Our extraordinary capacity to inflict lethal violence on each other is normally held in restraint by the natural aversion most people have to violence. If we fail to cooperate, we are vulnerable to falling into vicious cycles of violence that don’t benefit anyone. But we should be more optimistic about our capacity for peacemaking; our ‘better angels’ as Pinker puts it. Despite living in states of political anarchy, hunter gatherers were normally able to cooperate and exist peacefully together.

For the first 290,000 years of our species’ approximately 300,000 year history, everyone was a hunter gatherer.  In The Better Angels of Our Nature, Steven Pinker argued that hunter gatherers suffered from extremely high rates of violence. Better Angels claims that at least 14 percent of prehistoric hunter gatherers died violently. This equates to a violent death rate of at least 420 per 100,000 people per year, using data on typical hunter gatherer mortality rates.

This is a much higher rate of violence than almost anywhere in the modern world in the twentieth and twenty-first centuries. To put it in perspective, global deaths from all types of violence between 2004–21 were around 8 per 100,000 people per year. Even the most violent cities in the world today, in Northern Brazil, South Africa, and on the Mexican side of the US-Mexico border, have murder rates of only around 100 per 100,000 per year.

The implication in Better Angels is that the human mind evolved and developed in a world plagued by constant, endemic violence.

Our 2022 study examined both the ethnographic data – contemporary studies of groups that existed until some modern contact – and archeological data on hunter gatherer violence, much of which comes from data gathered after the publication of Better Angels. We reviewed quantitative estimates of rates of violence in ethnographies, filtering for groups that are most representative of our pre-agricultural ancestors. Our archeological estimates are based on reanalyzing a dataset developed by Gomez et al. (which was released after Better Angels was published and has dozens of extra samples), which attempts to measure rates of violent death by looking for evidence of trauma to skeletal remains. Our study produced estimates for lethal violence around four times lower than Pinker’s figures.

Prehistoric hunter gatherers seem to have been somewhat more violent than the twentieth-century average, but not dramatically so. And this is despite these societies lacking any of the modern state’s apparatus for managing violence: no code of law, no judges, no police, and no sophisticated healthcare….’ (John Halstead via worksinprogress.co)

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