Macachiavellian Intelligence How Rhesus Macaques and Humans Have Conquered the World
by Dario Maestripieri
University of Chicago Press, 2007
Cloth: 978-0-226-50117-8 | Electronic: 978-0-226-50121-5
DOI: 10.7208/chicago/9780226501215.001.0001
ABOUT THIS BOOKAUTHOR BIOGRAPHYREVIEWSTABLE OF CONTENTS

ABOUT THIS BOOK

Judged by population size and distribution, homo sapiens are clearly the most successful primates. A close second, however, would be rhesus macaques, who have adapted to—and thrived in—such diverse environments as mountain forests, dry grasslands, and urban sprawl. Scientists have spent countless hours studying these opportunistic monkeys, but rhesus macaques have long been overshadowed in the public eye by the great apes, who, because of their greater intelligence, are naturally assumed to have more to teach us, both about other primates and about humans as well.

Dario Maestripieri thinks it is high time we shelve that misperception, and with Macachiavellian Intelligence he gives rhesus macaques their rightful turn in the spotlight. The product of more than twenty years studying these fascinating creatures, Macachiavellian Intelligence caricatures a society that is as much human as monkey, with hierarchies and power struggles that would impress Machiavelli himself. High-status macaques, for instance, maintain their rank through deft uses of violence and manipulation, while altruism is almost unknown and relationships are perpetually subject to the cruel laws of the market. Throughout this eye-opening account, Maestripieri weds his thorough knowledge of macaque behavior to his abiding fascination with human society and motivations. The result is a book unlike any other, one that draws on economics as much as evolutionary biology, politics as much as primatology.

Rife with unexpected connections and peppered with fascinating anecdotes, Macachiavellian Intelligence has as much to teach us about humans as it does about macaques, presenting a wry, rational, and wholly surprising view of our humanity as seen through the monkey in the mirror.

AUTHOR BIOGRAPHY

Dario Maestripieri is associate professor of comparative human development and evolutionary biology at the University of Chicago.

REVIEWS

“Rhesus monkeys and humans are highly successful survivors in a complex and sometimes cruel world. Macachiavellian Intelligence, a good read about the nitty-gritty details of how rhesus monkeys make it, tells us a lot about ourselves. It's often not a pretty picture to read about manipulative social opportunism, but if we ignore the important message of this book we, not the monkeys or other animals, will be the big losers.”
— Marc Bekoff, author of Minding Animals and The Emotional Lives of Animals

"Maestripieri tells the story with incisive prose, sharp wit and admirable brevity, and the book should appeal to a wide audience from cynical teenagers to economists who believe that the 'invisible hand' of competition underlies all human society."
— Alison Jolly, Times Higher Education Supplement

“Last year, a U.S. senator doomed his chances of reelection when he referred to a protestor as a 'macaca,' a slur sometimes used for dark-skinned people. But ‘macaca’ is also a name for the rhesus macaque monkey, and Maestripieri writes, ‘If politicians knew more about the Machiavellian intelligence of rhesus macaques, they would probably call one another “macaca” all the time, but mean it as a compliment.’ Maestripieri goes on to describe the social lives and competitive society of macaques, who aren't above using violence and manipulation to get ahead and stay there.”

— Discover

Macachiavellian Intelligence provides deep insights into the fascinating psychology of both rhesus macaques and humans. Written in an engaging style with gripping examples that highlight key principles, it gives readers a profound understanding of the things we all care about—sex, status, dominance, aggression, kin, cooperation, and conflict. Macachiavellian Intelligence is a must-read for anyone interested in the strategies we primates use to navigate the complexities of social living.”--David M. Buss, author of The Evolution of Desire:  Strategies of Human Mating and Evolutionary Psychology: The New Science of the Mind
— David M. Buss

“Books devoted to the topic of primate behavior and its similarity to humans are dominated by studies of great apes. Dario Maestripieri fills that lamentable gap with Macachiavellian Intelligence, weaving an explanation of macaque evolution and social organization into a story that also helps to explain many aspects of human behavior. Maestripieri’s keen insights into both macaques and humans, presented with humor and personality, make MacachiavellianIntelligence a captivating read.”
— William Hopkins, Yerkes National Primate Research Center, Emory University

"Primate books are good for us. They remind us that we're primates, too. And the embarrassing primate books are best. Macachiavellian Intelligence is an excellently embarrassing primate book, and just the thing to make us blush and shuffle our feet."
— Michael Bywater, Telegraph

"A salutary reminder that we are members of the Order Primates as much as of the Family Hominidae, and not all that different from our disquietingly nasty cousins."
— Sarah F. Brosnan, Nature

"This is a book that will appeal to a wide audience, but without losing the science."
— Michael Cuisin, Mammalia

TABLE OF CONTENTS

- Dario Maestripieri
DOI: 10.7208/chicago/9780226501215.003.0001
[humans, intelligence, rhesus macaques, human nature, metaphysics, baboons, primates, brains]
Of the more than 300 primate species currently living on Earth, Homo sapiens has clearly been the most successful. This success of humans can be attributed to their large brains and sagacity. By the same criteria of population size and geographic distribution, another very successful primate on Earth is a monkey known as the rhesus macaque. The rhesus macaque, however, is not one of the smartest primates. Other primates—the great apes—have bigger brains and are smarter than rhesus macaques, but unfortunately are all on the brink of extinction. Hence, being smart is not by itself a guarantee of success in this corner of the universe. There are different kinds of intelligence and different ways to use it. This book is about rhesus macaques and what they have in common with humans. Without taking anything away from baboons, understanding why rhesus macaques behave the way they do may tell us something about human nature, metaphysics, and perhaps the future as well. (pages 1 - 6)
This chapter is available at:
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- Dario Maestripieri
DOI: 10.7208/chicago/9780226501215.003.0002
[rhesus macaques, Macaca mulatta, evolution, adaptive radiation, weeds, weed macaques, Caribbean, Clarence Ray Carpenter, biomedical research, geographical distribution]
There are nineteen different species of rhesus macaque (scientific name: Macaca mulatta). The real macaques belong to a group of primates called Old World monkeys because they are found only in Africa and Asia, in contrast to New World monkeys, which live in Central and South America. The evolutionary history of macaques is a textbook case of what biologists call an adaptive radiation—a process by which organisms colonize new environments, adapt to the local conditions, and diversify into different species. A key component of rhesus macaques' success has been their ability to adapt to changes in the environment induced by people and to people themselves. A few years ago, some primatologists proposed to call those species that have successfully adapted to human presence “weed macaques,” because rhesus macaques share some characteristics with weeds. This chapter focuses on the evolution and geographical distribution of rhesus macaques. It also looks at their introduction to an island in the Caribbean in the mid-1930s by the American biologist Clarence Ray Carpenter, as well as their use in biomedical research. (pages 7 - 16)
This chapter is available at:
    https://academic.oup.com/chica...

- Dario Maestripieri
DOI: 10.7208/chicago/9780226501215.003.0003
[rhesus macaques, politics, nepotism, kin selection, kinship, social tolerance, altruism, same-sex bonding, incest, Sigmund Freud]
Nepotism is inherent in both humans and animals. Some animal societies are more or less nepotistic than others, but there is no society in which individuals are biased in favor of non-kin and against their kin. The reason nepotism exists is a phenomenon called kin selection. By helping relatives with whom they share genes, individuals increase the probability that their own genes will be passed on to the next generation. Without information on kinship, it is virtually impossible to understand how any animal or human society is organized and why the individuals in it behave the way they do. This chapter, which examines nepotism and politics among rhesus macaques, first discusses Sigmund Freud's explanation of how sex between family members contributes to human behavior. It looks at incest and dispersal, the origins of same-sex bonding, rhesus macaques' social tolerance of their relatives and other individuals, and their altruism. (pages 17 - 36)
This chapter is available at:
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- Dario Maestripieri
DOI: 10.7208/chicago/9780226501215.003.0004
[humans, rhesus macaques, aggression, violence, dominance, hierarchies, ranks, altruism, opportunism, scapegoating]
Konrad Lorenz, the Austrian ethologist who won the Nobel Prize in 1973 for his studies of animal behavior, argued that aggression is a necessary and an inevitable aspect of animal social behavior, although not many behavioral biologists these days share his views on aggression. Aggression has a lot to do with competition; that is, the need or desire of two or more individuals for the same thing. Why are rhesus macaques and humans so aggressive? Because aggression is a valuable tool that is available at a low price. The seemingly senseless aggression of rhesus macaques makes perfect sense if one realizes that what the monkeys really want and fight for is not this or that resource, but power. Monkey power is called dominance, and to understand dominance we must first understand that rhesus macaques, just like people, have social relationships. This chapter explains aggression and dominance in rhesus macaques and humans. It first discusses dominance hierarchies and ranks, and then considers altruism and opportunism in agonistic intervention, before concluding with an analysis of scapegoating. (pages 37 - 62)
This chapter is available at:
    https://academic.oup.com/chica...

- Dario Maestripieri
DOI: 10.7208/chicago/9780226501215.003.0005
[racism, neophobia, xenophobia, humans, rhesus macaques, wars, revolutions, aggression, violence, fighting]
The reason racism is so difficult to eradicate is that differences between the races, though meaningless, are always there, right in our faces. Our aversion to strangers is not simply a case of fear of novelty, or what we call neophobia; it is something more specific that applies only to other people, and therefore it deserves a term of its own: xenophobia. Much like humans, rhesus macaques do not like strangers, and their first responses to them are fear and aggression. Wars between groups of rhesus macaques with lots of casualties have not really been observed anywhere, but they probably happen. During their wars and revolutions, people commit cruel and atrocious acts of violence against other people, acts they could not even conceive of during their normal lives. Likewise, the behavior of rhesus macaque females during a matriline overthrow becomes dramatically different from anything they would do in the course of their everyday lives. Aggression and fighting happen every day in a rhesus macaque group, and only a small minority of fights result in serious injuries. (pages 63 - 80)
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- Dario Maestripieri
DOI: 10.7208/chicago/9780226501215.003.0006
[humans, rhesus macaques, sex, sexual behavior, business, group living, sexuality, females, kinship, Solly Zuckerman]
In the United States, sex is a multibillion-dollar industry. Sex sells. Selling and buying sex itself is called prostitution, pornography, and many other names. Using sex to sell anything else—food and clothes, magazines and books, TV news and Hollywood movies—is called good business. Men are big buyers of sex: they start at puberty and do not stop until they drop dead. Much like humans, rhesus macaques use sex for business purposes. The key to understanding how sex has turned into a business is the nature of primate female sexuality. Many primate females have menstrual cycles very similar to those of women. Sex is not the only reason primates live in groups. Group living has many benefits, including cooperation to find food and protection from predators. There are also forces other than sex—kinship, for example—that keep these groups together. Back in the 1920s, the British biologist Solly Zuckerman noticed that monkeys seemed to have sex all the time. Early laboratory studies of rhesus macaque sexual behavior seemed to confirm Zuckerman's observations. (pages 81 - 106)
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- Dario Maestripieri
DOI: 10.7208/chicago/9780226501215.003.0007
[parents, parenting, parental investment, humans, rhesus macaques, Robert Trivers, love, economics, stock market, coefficient of relatedness]
Parents are willing to do for their children far more than they would do for themselves or for any other person in the world. Our understanding of parenting was revolutionized by the evolutionary biologist Robert Trivers, who proposed his “parental investment theory” based on the intuition that investing in children is basically no different from investing in the stock market. Trivers also explained that the squabbles between parents and children that we are all familiar with have a genetic cause—something to do with something called the coefficient of relatedness. Parenting is an investment in the real economic sense of the word, and like any other investment, it is regulated by the balance of its costs and benefits. Parents should invest in their children as long as the benefits are greater than the costs. While rhesus macaques do not show many positive emotions such as love or happiness, if they were to have at least one of them, it should be mother love. This chapter shows that mother love in humans and rhesus macaques can be explained by economics. (pages 107 - 130)
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- Dario Maestripieri
DOI: 10.7208/chicago/9780226501215.003.0008
[humans, rhesus macaques, communication, language, behavior, signals, threats, bluffs]
All animal social life involves some sharing of space and coordination of activity among the individuals that are part of a group. There are many species of animals, however, from fishes to horses, in which individuals live in groups but, most of the time, just mind their own business. Rhesus macaques cannot afford to mind their own business. In the Machiavellian social arena, everything has a cost, and one has to engage in business transactions with other individuals to obtain anything from them. The business activity with which you get others to do or not to do things to you, for you, or with you is called communication. In the business of communication, the behavior of other individuals can be purchased with a currency called signals, and all payments are made up front. Communication works according to the same principles among humans, rhesus macaques, and all kinds of other animals. A form of communication is language, which is particularly good for exchanging information for other information. Rhesus macaques threaten others with the use of threats and bluffs. (pages 131 - 156)
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- Dario Maestripieri
DOI: 10.7208/chicago/9780226501215.003.0009
[humans, rhesus macaques, human nature, evolution, social intelligence, political power, nepotism, despotism, cooperation, competition]
Humans (Homo sapiens) and rhesus macaques (Macaca mulatta) are both political animals. In both human and rhesus macaque societies, it is difficult to survive and be successful without the help of others. Success depends on political power, and that power is acquired and maintained through the formation of alliances with other individuals. But wherever there is cooperation there is also competition. Individuals cooperate with one another to compete against others. Because of competition, the main source of problems for people is other people, and for rhesus macaques it is other rhesus macaques. To deal with the complexities of cooperation and competition, rhesus macaques and humans have evolved a sophisticated and opportunistic form of social intelligence. Life in large social groups may encourage not only the evolution of Machiavellian social intelligence, but of complex intelligence in general. This chapter examines the evolution of social intelligence in humans and rhesus macaques, the inequality of the sexes as well as male and female power, nepotism and despotism in rhesus and human societies, and human nature versus rhesus nature. (pages 157 - 174)
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Notes

References

Acknowledgments

Index