different neurological "circuits" or "modules," which can each be conceived as
mini computer programs selected under environmental pressure to solve
CATO POLICY REPORT specific problems of survival and reproduction typical in the original setting of
human evolution, the Environment of Evolutionary Adaptedness, the "EEA."
Strictly speaking, the EEA is a statistical composite of environmental pressures
JANUARY/FEBRUARY 2005
that account for the evolutionary selection of our distinctively human traits.
Capitalism and Human Nature Loosely, the EEA was the period called the Pleistocene during which humans
lived as hunter-gatherers from about 1.6 million years ago up until the
By Will Wilkinson
invention of agriculture about 10,000 years ago.
I
n the spring of 1845, Karl Marx wrote, "... the human essence is no According to evolutionary psychologists, the basic constitution of the human
abstraction inherent in each single individual. In its reality it is the mind hasn't changed appreciably for about 50,000 years. Thus the evolutionary
ensemble of social relations." Marx's idea was that a change in the psychologist's slogan: modern skulls house Stone Age minds.
"ensemble of social relations" can change "the human essence."
As pioneers of evolutionary psychology Leda Cosmides and John Tooby put it:
In June 2004 the communist North Korean government issued a statement to its
starving citizens recommending the consumption of pine needles. Pyongyang
The key to understanding how the modern mind works is to realize that
maintained that pine needle tea could effectively prevent and treat cancer,
its circuits were not designed to solve the day-to-day problems of a
arteriosclerosis, diabetes, cerebral hemorrhage, and even turn grey hair to
modern American—they were designed to solve the day-to-day
black. problems of our hunter-gatherer ancestors.
Tragically, human nature isn't at all as advertised, and neither is pine needle
tea. According to the U.S. State Department, at least one million North Koreans Understanding the problems faced by members of human hunter-gatherer
have died of famine since 1995. bands in the EEA can therefore help us to understand a great deal about human
nature, and the prospects and pathologies of modern social systems.
Marx's theory of human nature, like Kim Jong Il's theory of pine needle tea, is a
biological fantasy, and we have the corpses to prove it. Which may drive us to First, a word of caution: We cannot expect to draw any straightforward positive
wonder: if communism is deadly because it is contrary to human nature, does political lessons from evolutionary psychology. It can tell us something about
that imply that capitalism, which is contrary to communism, is distinctively the kind of society that will tend not to work, and why. But it cannot tell us
compatible with human nature? which of the feasible forms of society we ought to aspire to. We cannot, it turns
out, infer the naturalness of capitalism from the manifest failure of communism
A growing scientific discipline called evolutionary psychology specializes in
to accommodate human nature. Nor should we be tempted to infer that natural
uncovering the truth about human nature, and it is already illuminating what
is better. Foraging half-naked for nuts and berries is natural, while the New
we know about the possibilities of human social organization. How natural is
York Stock Exchange and open-heart surgery would boggle our ancestors'
capitalism?
minds.
Evolutionary Psychology 101
What evolutionary psychology really helps us to appreciate is just what an
Evolutionary psychology seeks to understand the unique nature of the human unlikely achievement complex, liberal, market-based societies really are. It
mind by applying the logic and methods of contemporary evolutionary biology helps us to get a better grip on why relatively free and fabulously wealthy
and cognitive psychology. societies like ours are so rare and, possibly, so fragile. Evolutionary psychology
helps us to understand that successful market liberal societies require the
The main working assumption of evolutionary psychology is that the mind is a
cultivation of certain psychological tendencies that are weak in Stone Age
variegated toolkit of specialized functions (think of a Swiss Army knife) that has
minds and the suppression or sublimation of other tendencies that are strong.
evolved through natural selection to solve specific problems faced by our
Free, capitalist societies, where they can be made to work, work with human
forebears. Distinct mental functions—e.g., perception; reading other people's
nature. But it turns out that human nature is not easy material to work with.
intentions; responding emotionally to potential mates—are underwritten by
There is a rapidly expanding library of books that try to spell out the moral, Informal structures of dominance and status may be the leading cause of tears
political and economic implications of evolutionary psychology. (The Origins of in junior high students.
Virtue by Matt Ridley, Darwinian Politics by Paul Rubin, and The Company of
The dynamics of dominance hierarchies in the EEA was complex. Hierarchies
Strangers by Paul Seabright are good ones). Below is a short tour of just a few
play an important role in guiding collective efforts and distributing scarce
features of human nature emphasized by evolutionary psychologists that
resources without having to resort to violence. Daily affairs run more smoothly
highlight the challenges of developing and sustaining a modern market liberal
if everyone knows what is expected of him. However, space at the top of the
order.
hierarchy is scarce and a source of conflict and competition. Those who
We are Coalitional command higher status in social hierarchies have better access to material
resources and mating opportunities. Thus, evolution favors the psychology of
The size of hunter-gather bands in the EEA ranged from 25 to about 150 people.
males and females who are able successfully to compete for positions of
The small size of those groups ensured that everyone would know everyone
dominance.
else; that social interactions would be conducted face-to-face; and that
reputations for honesty, hard work, and reliability would be common Living at the bottom of the dominance heap is a raw deal, and we are not built
knowledge. Even today, people's address books usually contain no more than to take it lying down. There is evidence that lower status males naturally form
150 names. And military squadrons generally contain about as many people as coalitions to check the power of more dominant males and to achieve relatively
Pleistocene hunting expeditions. egalitarian distribution of resources. In his book Hierarchy in the Forest,
anthropologist Christopher Boehm calls these coalitions against the powerful
Experiments by psychologists Leda Cosmides and Robert Kurzban have shown
"reverse dominance hierarchies."
that human beings have specialized abilities to track shifting alliances and
coalitions, and are eager to define others as inside or outside their own groups. Emory professor of economics and law Paul Rubin usefully distinguishes
Coalitional categories can easily lead to violence and war between groups. between "productive" and "allocative" hierarchies. Productive hierarchies are
Think of Hutus and Tutsis, Albanians and Serbs, Shiites and Sunnis, Crips and those that organize cooperative efforts to achieve otherwise unattainable
the Bloods, and so on ad nauseam. However, coalitional categories are fairly mutually advantageous gains. Business organizations are a prime example.
fluid. Under the right circumstances, we can learn to care more about Allocative hierarchies, on the other hand, exist mainly to transfer resources to
someone's devotion to the Red Sox or Yankees than their skin color, religion, or the top. Aristocracies and dictatorships are extreme examples. Although the
social class. nation-state can perform productive functions, there is the constant risk that it
becomes dominated by allocative hierarchies. Rubin warns that our natural
We cannot, however, consistently think of ourselves as members only of that
wariness of zero-sum allocative hierarchies, which helps us to guard against the
one grand coalition: the Brotherhood of Mankind. Our disposition to think in
concentration of power in too few hands, is often directed at modern positive-
terms of "us" versus "them" is irremediable and it has unavoidable political
sum productive hierarchies, like corporations, thereby threatening the viability
implications. Populist and racialist political rhetoric encourages people to
of enterprises that tend to make everyone better off.
identify themselves as primarily rich or poor, black or white. It is important to
avoid designing institutions, such as racial preference programs, that reinforce There is no way to stop dominance-seeking behavior. We may hope only to
coalitional categories that have no basis in biology and may heighten some of channel it to non-harmful uses. A free society therefore requires that positions
the tensions they are meant to relax. A great deal of the animosity toward free of dominance and status be widely available in a multitude of productive
trade, to take a different example, depends on economically and morally hierarchies, and that opportunities for greater status and dominance through
inappropriate coalitional distinctions between workers in Baltimore (us) and predation are limited by the constant vigilance of "the people"—the ultimate
workers in Bangalore (them). Positively, free trade is laudable for the way it reverse dominance hierarchy. A flourishing civil society permits almost
encourages us to see to members of unfamiliar groups as partners, not enemies. everyone to be the leader of something, whether the local Star Trek fan club or
the city council, thereby somewhat satisfying the human taste for hierarchical
We are Hierarchical
status, but to no one's serious detriment.
Like many animals and all primates, humans form hierarchies of dominance. It
We are Envious Zero-sum Thinkers
is easy to recognize social hierarchies in modern life. Corporations, government,
chess clubs, and churches all have formal hierarchical structures of officers.
Perhaps the most depressing lesson of evolutionary psychology for politics is Evolutionary psychology can help us to understand that property rights are not
found in its account of the deep-seated human capacity for envy and, related, of created simply by strokes of the legislator's pen.
our difficulty in understanding the idea of gains from trade and increases in
Mutually Beneficial Exchange is Natural
productivity—the idea of an ever-expanding "pie" of wealth.
Trade and mutually beneficial exchange are human universals, as is the
There is evidence that greater skill and initiative could lead to higher status and
division of labor. In their groundbreaking paper, "Cognitive Adaptations for
bigger shares of resources for an individual in the EEA. But because of the social
Social Exchange," Cosmides and Tooby point out that, contrary to widespread
nature of hunting and gathering, the fact that food spoiled quickly, and the utter
belief, hunter-gatherer life is not "a kind of retro-utopia" of "indiscriminate,
absence of privacy, the benefits of individual success in hunting or foraging
egalitarian cooperation and sharing." The archeological and ethnographic
could not be easily internalized by the individual, and were expected to be
evidence shows that hunter-gatherers were involved in numerous forms of
shared. The EEA was for the most part a zero-sum world, where increases in
trade and exchange. Some forms of hunter-gatherer trading can involve quite
total wealth through invention, investment, and extended economic exchange
complex specialization and the interaction of supply and demand.
were totally unknown. More for you was less for me. Therefore, if anyone
managed to acquire a great deal more than anyone else, that was pretty good Most impressive, Cosmides and Tooby have shown through a series of
evidence that theirs was a stash of ill-gotten gains, acquired by cheating, experiments that human beings are able easily to solve complex logical puzzles
stealing, raw force, or, at best, sheer luck. Envy of the disproportionately involving reciprocity, the accounting of costs and benefits, and the detection of
wealthy may have helped to reinforce generally adaptive norms of sharing and people who have cheated on agreements. However, we are unable to solve
to help those of lower status on the dominance hierarchy guard against further formally identical puzzles that do not deal with questions of social exchange.
predation by those able to amass power. That, they argue, points to the existence of "functionally specialized, content-
dependent cognitive adaptations for social exchange."
Our zero-sum mentality makes it hard for us to understand how trade and
investment can increase the amount of total wealth. We are thus ill-equipped to In other words, the human mind is "built" to trade.
easily understand our own economic system.
Trust and Hayek's Two Orders
These features of human nature—that we are coalitional, hierarchical, and
It is easy to see a kind of in vitro capitalism in the evolved human propensity to
envious zero-sum thinkers—would seem to make liberal capitalism extremely
recognize property rights, specialize in productive endeavors, and engage in
unlikely. And it is. However, the benefits of a liberal market order can be seen in
fairly complex forms of social exchange. However, the kind of freedom and
a few further features of the human mind and social organization in the EEA.
wealth we enjoy in the United States remains a chimera to billions. While our
Property Rights are Natural evolved capacities are the scaffolding upon which advanced liberal capitalism
has been built, they are, quite plainly, not enough, as the hundreds of millions
The problem of distributing scarce resources can be handled in part by
who live on less than a dollar a day can attest. The path from the EEA to laptops
implicitly coercive allocative hierarchies. An alternative solution to the problem
and lattes requires a great cultural leap. In recent work, Nobel Prize-winning
of distribution is the recognition and enforcement of property rights. Property
economists Douglass North and Vernon Smith have stressed that the crucial
rights are prefigured in nature by the way animals mark out territories for their
juncture is the transition from personal to impersonal exchange.
exclusive use in foraging, hunting, and mating. Recognition of such
rudimentary claims to control and exclude minimizes costly conflict, which by Economic life in the EEA was based on repeated face-to-face interactions with
itself provides a strong evolutionary reason to look for innate tendencies to well-known members of the community. Agreements were policed mainly by
recognize and respect norms of property. public knowledge of reputation. If you cheated or shirked, your stock of
reputation would decline, and so would your prospects. Our evolutionary
New scientific research provides even stronger evidence for the existence of
endowment prepared us to navigate skillfully through that world of personal
such property "instincts." For example, recent experimental work by Oliver
exchange. However, it did not prepare us to cooperate and trade with total
Goodenough, a legal theorist, and Christine Prehn, a neuroscientist, suggests
strangers whom we had never met and might never see again. The road to
that the human mind evolved specialized modules for making judgments about
prosperity must cross a chasm of uncertainty and mistrust.
moral transgressions, and transgressions against property in particular.
The transition to extended, impersonal market order requires the emergence of As Immanuel Kant famously remarked, "from the crooked timber of humanity
"institutions that make human beings willing to treat strangers as honorary no truly straight thing can be made." But, in the words of philosopher, Denis
friends" as Paul Seabright puts it. The exciting story of the way these institutions Dutton,
piggybacked on an evolved psychology designed to solve quite different
ecological problems is the topic of Seabright's book, The Company of Strangers,
It is not ... that no beautiful carving or piece of furniture can be
as well as an important part of forthcoming works by Douglass North and
produced from twisted wood; it is rather that whatever is finally created
Vernon Smith.
will only endure if it takes into account the grain, texture, natural joints,
knotholes, strengths and weaknesses of the original material.
As he so often did, F. A. Hayek anticipated contemporary trends. Hayek
understood that our kind of economy and society, which he called an extended
order, or "macro-cosmos," is in many ways alien to our basic psychological Evolutionary psychology, by helping us better understand human nature, can
constitution, which is geared to deal with life in small groups, the "micro- aid us in cultivating social orders that do not foolishly attempt to cut against the
cosmos." We live in two worlds, the face-to-face world of the tribe, family, grain of human nature. We can learn how best to work with the material of
school, and firm, and the impersonal, anonymous world of huge cities, hyper- humanity to encourage and preserve societies, like our own, that are not only
specialization, and trans-world trade. Each world has its own set of rules, and beautiful, but will endure.
we confuse them at our peril. As Hayek writes in The Fatal Conceit:
Will Wilkinson is a research fellow at the Cato Institute and
If we were to apply the unmodified, uncurbed, rules of the micro- editor of Cato Unbound.
cosmos (i.e., of the small band or troop, or of, say, our families) to the
macro-cosmos (our wider civilization), as our instincts and sentimental
yearnings often make us wish to do, we would destroy it. Yet if we were
always to apply the rules of the extended order to our more intimate
groupings, we would crush them. So we must learn to live in two sorts of
worlds at once.
The balance is delicate. Once we appreciate the improbability and fragility of PRINTED FROM CATO.ORG
our wealth and freedom, it becomes clear just how much respect and gratitude
we owe to the belief systems, social institutions, and personal virtues that
allowed for the emergence of our "wider civilization" and that allow us to move
between our two worlds without destroying or crushing either.
Evolutionary Psychology and Political Humility
The key political lesson of evolutionary psychology is simply that there is a
universal human nature. The human mind comprises many distinct, specialized
functions, and is not an all-purpose learning machine that can be reformatted at
will to realize political dreams. The shape of society is constrained by our
evolved nature. Remaking humanity through politics is a biological
impossibility on the order of curing cancer with pine needle tea. We can,
however, work with human nature—and we have. We have, through culture,
enhanced those traits that facilitate trust and cooperation, channeled our
coalitional and status-seeking instincts toward productive uses, and built upon
our natural suspicion of power to preserve our freedom. We can, of course, do
better.
