Richard Wrangham | |
|---|---|
 Richard Wrangham in 2016 | |
| Born | 1948 |
| Nationality | British |
| Employer(s) | Harvard University University of Michigan |
Richard Walter Wrangham (born 1948) is an English anthropologist and primatologist; he is Professor of Biological Anthropology at Harvard University. His research and writing have involved ape behavior, human evolution, violence, and cooking.
Wrangham was born in Leeds, Yorkshire. [1]
Following his years on the faculty of the University of Michigan, he became the Ruth Moore Professor of Biological Anthropology at Harvard University and his research group is now part of the newly established Department of Human Evolutionary Biology. He is a MacArthur fellow. [2]
He is co-director of the Kibale Chimpanzee Project, the long-term study of the Kanyawara chimpanzees in Kibale National Park, Uganda. [3] His research culminates in the study of human evolution in which he draws conclusions based on the behavioural ecology of apes. As a graduate student, Wrangham studied under Robert Hinde and Jane Goodall. [4]
Wrangham is known predominantly for his work in the ecology of primate social systems, the evolutionary history of human aggression (in his 1996 book with Dale Peterson, Demonic Males: Apes and the Origins of Human Violence and his 2019 work The Goodness Paradox ), and his research in cooking (summarized in his book, Catching Fire: How Cooking Made Us Human ) and self-domestication.
Wrangham has been instrumental in identifying behaviors considered "human-specific" in chimpanzees, including culture [5] and with Eloy Rodriguez, chimpanzee self-medication. [4] [6]
Among the recent courses he teaches in the Human Evolutionary Biology (HEB) concentration at Harvard are HEB 1330 Primate Social Behaviour and HEB 1565 Theories of Sexual Coercion (co-taught with Professor Diane Rosenfeld from Harvard Law School). In March 2008, he was appointed House Master of Currier House at Harvard College. [7] He received an honorary degree in Doctor of Science from Oglethorpe University in 2011. [8]
Wrangham began his career as a researcher at Jane Goodall's long-term common chimpanzee field study in Gombe Stream National Park in Tanzania. He befriended fellow primatologist Dian Fossey and assisted her in setting up her nonprofit mountain gorilla conservation organization, the Dian Fossey Gorilla Fund (originally the Digit Fund). [9]
Wrangham's focused recently on the role cooking has played in human evolution. In Catching Fire: How Cooking Made Us Human , he argued that cooking food is obligatory for humans as a result of biological adaptations and that cooking, in particular the consumption of cooked tubers, might explain the increase in hominid brain sizes, smaller teeth and jaws, and decrease in sexual dimorphism that occurred roughly 1.8 million years ago. [10] [11] [12] Some anthropologists disagree with Wrangham's ideas, arguing that no solid evidence has been found to support Wrangham's claims, though Wrangham and colleagues, among others, have demonstrated in the laboratory the effects of cooking on energetic availability: cooking denatures proteins, gelatinizes starches, and helps kill pathogens. [13] [14] [10] The mainstream explanation is that human ancestors, prior to the advent of cooking, turned to eating meats, which then caused the evolutionary shift to smaller guts and larger brains. [15]
In his 2019 book, The Goodness Paradox: The Strange Relationship Between Virtue and Violence in Human Evolution, Wrangham argues that humans have "domesticated" themselves by a process of self-selection, as opposed to our selective breeding of dogs, livestock, or (more recently) foxes by Dmitry Belyayev and others. Wrangham distinguishes between "reactive aggression", when individuals lash out or react to a provocation, and "proactive aggression", which is planned, premeditated, and involves deliberate risk-avoidant tactical strikes, including war and capital punishment. He claims that humans are paradoxically extraordinarily low in "reactive" aggression but very high in and highly skilled at "proactive" aggression, and he argues that the threat of proactive aggression by males has played a crucial role in human psychology, patriarchy, so-called "morality" and history.
Wrangham married Dr. Elizabeth Ross in 1980 and has three adult sons. [16] His work of studying the essential violence of chimpanzees, caused Wrangham to not eat meat for 40 years. [17]
Primates is an order of mammals, which is further divided into the strepsirrhines, which include lemurs, galagos, and lorisids; and the haplorhines, which include tarsiers; and the simians, which include monkeys and apes. Primates arose 85–55 million years ago first from small terrestrial mammals, which adapted for life in tropical forests: many primate characteristics represent adaptations to the challenging environment among tree tops, including large brain sizes, binocular vision, color vision, vocalizations, shoulder girdles allowing a large degree of movement in the upper limbs, and opposable thumbs that enable better grasping and dexterity. Primates range in size from Madame Berthe's mouse lemur, which weighs 30 g (1 oz), to the eastern gorilla, weighing over 200 kg (440 lb). There are 376–524 species of living primates, depending on which classification is used. New primate species continue to be discovered: over 25 species were described in the 2000s, 36 in the 2010s, and six in the 2020s.
The bonobo, also historically called the pygmy chimpanzee, is an endangered great ape and one of the two species making up the genus Pan. While bonobos are, today, recognized as a distinct species in their own right, they were initially thought to be a subspecies of Pan troglodytes, due to the physical similarities between the two species. Taxonomically, members of the chimpanzee/bonobo subtribe Panina—composed entirely by the genus Pan—are collectively termed panins.
Aggression is a behavior aimed at opposing or attacking something or someone. Though often done with the intent to cause harm, it can be channeled into creative and practical outlets for some. It may occur either reactively or without provocation. In humans, aggression can be caused by various triggers. For example, built-up frustration due to blocked goals or perceived disrespect. Human aggression can be classified into direct and indirect aggression; while the former is characterized by physical or verbal behavior intended to cause harm to someone, the latter is characterized by behavior intended to harm the social relations of an individual or group.
Primatology is the scientific study of non-human primates. It is a diverse discipline at the boundary between mammalogy and anthropology, and researchers can be found in academic departments of anatomy, anthropology, biology, medicine, psychology, veterinary sciences and zoology, as well as in animal sanctuaries, biomedical research facilities, museums and zoos. Primatologists study both living and extinct primates in their natural habitats and in laboratories by conducting field studies and experiments in order to understand aspects of their evolution and behavior.
Robin Ian MacDonald Dunbar is a British biological anthropologist, evolutionary psychologist, and specialist in primate behaviour. Dunbar is professor emeritus of evolutionary psychology of the Social and Evolutionary Neuroscience Research Group in the Department of Experimental Psychology at the University of Oxford. He is best known for formulating Dunbar's number, a measurement of the "cognitive limit to the number of individuals with whom any one person can maintain stable relationships".
The killer ape theory or killer ape hypothesis is the theory that war and interpersonal aggression was the driving force behind human evolution. It was originated by Raymond Dart in the 1950s; it was developed further in African Genesis by Robert Ardrey in 1961.
Dual inheritance theory (DIT), also known as gene–culture coevolution or biocultural evolution, was developed in the 1960s through early 1980s to explain how human behavior is a product of two different and interacting evolutionary processes: genetic evolution and cultural evolution. Genes and culture continually interact in a feedback loop: changes in genes can lead to changes in culture which can then influence genetic selection, and vice versa. One of the theory's central claims is that culture evolves partly through a Darwinian selection process, which dual inheritance theorists often describe by analogy to genetic evolution.
Evolutionary developmental psychology (EDP) is a research paradigm that applies the basic principles of evolution by natural selection, to understand the development of human behavior and cognition. It involves the study of both the genetic and environmental mechanisms that underlie the development of social and cognitive competencies, as well as the epigenetic processes that adapt these competencies to local conditions.
Demonic Males: Apes and the Origins of Human Violence is a 1996 book by Richard Wrangham and Dale Peterson examining the evolutionary factors leading to human male violence.
Self-domestication is a scientific hypothesis that suggests that, similar to domesticated animals, there has been a process of artificial selection among members of the human species conducted by humans themselves. In this way, during the process of hominization, a preference for individuals with collaborative and social behaviors would have been shown to optimize the benefit of the entire group: docility, language, and emotional intelligence would have been enhanced during this process of artificial selection. The hypothesis is raised that this is what differentiated Homo sapiens from Homo neanderthalensis and Homo erectus.
Sexual selection in humans concerns the concept of sexual selection, introduced by Charles Darwin as an element of his theory of natural selection, as it affects humans. Sexual selection is a biological way one sex chooses a mate for the best reproductive success. Most compete with others of the same sex for the best mate to contribute their genome for future generations. This has shaped human evolution for many years, but reasons why humans choose their mates are not fully understood. Sexual selection is quite different in non-human animals than humans as they feel more of the evolutionary pressures to reproduce and can easily reject a mate. The role of sexual selection in human evolution has not been firmly established although neoteny has been cited as being caused by human sexual selection. It has been suggested that sexual selection played a part in the evolution of the anatomically modern human brain, i.e. the structures responsible for social intelligence underwent positive selection as a sexual ornamentation to be used in courtship rather than for survival itself, and that it has developed in ways outlined by Ronald Fisher in the Fisherian runaway model. Fisher also stated that the development of sexual selection was "more favourable" in humans.
Barbara Boardman Smuts is an American anthropologist and psychologist noted for her research into baboons, dolphins, and chimpanzees, and a Professor Emeritus at University of Michigan, Ann Arbor.
Catching Fire: How Cooking Made Us Human is a 2009 book by British primatologist Richard Wrangham, published by Profile Books in England, and Basic Books in the US. It argues the hypothesis that cooking food was an essential element in the physiological evolution of human beings. It was shortlisted for the 2010 Samuel Johnson Prize.
The challenge hypothesis outlines the dynamic relationship between testosterone and aggression in mating contexts. It proposes that testosterone promotes aggression when it would be beneficial for reproduction, such as mate guarding, or strategies designed to prevent the encroachment of intrasexual rivals. The positive correlation between reproductive aggression and testosterone levels is seen to be strongest during times of social instability. The challenge hypothesis predicts that seasonal patterns in testosterone levels are a function of mating system, paternal care, and male-male aggression in seasonal breeders.
Sexual swelling, sexual skin, or anogenital tumescence refers to localized engorgement of the anus and vulva region of some female primates that vary in size over the course of the menstrual cycle. Thought to be an honest signal of fertility, male primates are attracted to these swellings; preferring, and competing for, females with the largest swellings.
David Andrew Whiten, known as Andrew Whiten is a British zoologist and psychologist, Professor of Evolutionary and Developmental Psychology, and Professor Wardlaw Emeritus at University of St Andrews in Scotland. He is known for his research in social cognition, specifically on social learning, tradition and the evolution of culture, social Machiavellian intelligence, autism and imitation, as well as the behavioral ecology of sociality. In 1996, Whiten and his colleagues invented an artificial fruit that allowed to study learning in apes and humans.
The male warrior hypothesis (MWH) is an evolutionary psychology hypothesis by Professor Mark van Vugt which argues that human psychology has been shaped by between-group competition and conflict. Specifically, the evolutionary history of coalitional aggression between groups of men may have resulted in sex-specific differences in the way outgroups are perceived, creating ingroup vs. outgroup tendencies that are still observable today.
Colin A. Chapman is a professor at the Vancouver Island University in British Columbia, Canada. In addition, he is a Fellow of the Royal Society of Canada, an Honorary Lecturer at Makerere University in Uganda, a Member of the Committee of Research and Exploration at National Geographic, and an Associate Scientists of the Wildlife Conservation Society in New York. Prior to taking on his position at McGill University, he was at the University of Florida in the Department of Zoology from 1993 to 2004. He is internationally recognized for his 30+ years of research into primate ecology, population regulation, nutrition, and disease dynamics and for his contribution to conservation globally.
Brian Hare is a professor of evolutionary anthropology at Duke University. He researches the evolution of cognition by studying both humans, our close relatives the primates, and species whose cognition converged with our own. He founded and co-directs the Duke Canine Cognition Center.
The Goodness Paradox: The Strange Relationship Between Virtue and Violence in Human Evolution is a book by British primatologist Richard Wrangham.
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