The chimpanzee, also simply known as the chimp, is a species of great ape native to the forests and savannahs of tropical Africa. It has four confirmed subspecies and a fifth proposed one. When its close relative the bonobo was more commonly known as the pygmy chimpanzee, this species was often called the common chimpanzee or the robust chimpanzee. The chimpanzee and the bonobo are the only species in the genus Pan. Evidence from fossils and DNA sequencing shows that Pan is a sister taxon to the human lineage and is thus humans' closest living relative.
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 simians. 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 genus Pan consists of two extant species: the chimpanzee and the bonobo. Taxonomically, these two ape species are collectively termed panins. The two species were formerly collectively called "chimpanzees" or "chimps"; if bonobos were recognized as a separate group at all, they were referred to as "pygmy" or "gracile chimpanzees". Together with humans, gorillas, and orangutans they are part of the family Hominidae. Native to sub-Saharan Africa, chimpanzees and bonobos are currently both found in the Congo jungle, while only the chimpanzee is also found further north in West Africa. Both species are listed as endangered on the IUCN Red List of Threatened Species, and in 2017 the Convention on Migratory Species selected the chimpanzee for special protection.
Franciscus Bernardus Maria de Waal was a Dutch-American primatologist and ethologist. He was the Charles Howard Candler Professor of Primate Behavior in the Department of Psychology at Emory University in Atlanta, Georgia, director of the Living Links Center at the Yerkes National Primate Research Center at Emory, and author of numerous books including Chimpanzee Politics (1982) and Our Inner Ape (2005). His research centered on primate social behavior, including conflict resolution, cooperation, inequity aversion, and food-sharing. He was a member of the United States National Academy of Sciences and the Royal Netherlands Academy of Arts and Sciences.
The evolution of human intelligence is closely tied to the evolution of the human brain and to the origin of language. The timeline of human evolution spans approximately seven million years, from the separation of the genus Pan until the emergence of behavioral modernity by 50,000 years ago. The first three million years of this timeline concern Sahelanthropus, the following two million concern Australopithecus and the final two million span the history of the genus Homo in the Paleolithic era.
Richard Walter Wrangham 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.
Animal culture can be defined as the ability of non-human animals to learn and transmit behaviors through processes of social or cultural learning. Culture is increasingly seen as a process, involving the social transmittance of behavior among peers and between generations. It can involve the transmission of novel behaviors or regional variations that are independent of genetic or ecological factors.
The concept of the evolution of morality refers to the emergence of human moral behavior over the course of human evolution. Morality can be defined as a system of ideas about right and wrong conduct. In everyday life, morality is typically associated with human behavior rather than animal behavior. The emerging fields of evolutionary biology, and in particular evolutionary psychology, have argued that, despite the complexity of human social behaviors, the precursors of human morality can be traced to the behaviors of many other social animals. Sociobiological explanations of human behavior remain controversial. Social scientists have traditionally viewed morality as a construct, and thus as culturally relative, although others such as Sam Harris argue that there is an objective science of morality.
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.
The evolutionary origin of religion and religious behavior is a field of study related to evolutionary psychology, the origin of language and mythology, and cross-cultural comparison of the anthropology of religion. Some subjects of interest include Neolithic religion, evidence for spirituality or cultic behavior in the Upper Paleolithic, and similarities in great ape behavior.
Primate cognition is the study of the intellectual and behavioral skills of non-human primates, particularly in the fields of psychology, behavioral biology, primatology, and anthropology.
Neuropolitics is a science which investigates the interplay between the brain and politics. It combines work from a variety of scientific fields which includes neuroscience, political science, psychology, behavioral genetics, primatology, and ethology. Often, neuropolitics research borrow methods from cognitive neuroscience to investigate classic questions from political science such as how people make political decisions, form political / ideological attitudes, evaluate political candidates, and interact in political coalitions. However, another line of research considers the role that evolving political competition has had on the development of the brain in humans and other species. The research in neuropolitics often intersects with work in genopolitics, political psychology, political physiology, sociobiology, neuroeconomics, and neurolaw.
Toshisada Nishida was a Japanese primatologist who established one of the first long term chimpanzee field research sites. He was the first to discover that chimpanzees, instead of forming nuclear family-like arrangements, live a communal life with territorial boundaries. His discoveries of the medicinal use of plants by wild chimpanzees helped form the basis of the field of zoopharmacognosy.
Deep social mind is a concept in evolutionary psychology; it refers to the distinctively human capacity to 'read' the mental states of others while reciprocally enabling those others to read one's own mental states at the same time. The term 'deep social mind' was first coined in 1999 by Andrew Whiten, professor of Evolutionary and Developmental Psychology at St. Andrews University, Scotland. Together with closely related terms such as 'reflexivity' and 'intersubjectivity', it is now well-established among scholars investigating the evolutionary emergence of human sociality, cognition and communication.
Social learning refers to learning that is facilitated by observation of, or interaction with, another animal or its products. Social learning has been observed in a variety of animal taxa, such as insects, fish, birds, reptiles, amphibians and mammals.
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.
Animal faith is the study of animal behaviours that suggest proto-religious faith. It is commonly believed that religion and faith are unique to humans, largely due to the typical dictionary definition of the word religion requiring belief in a deity, which has not been observed in non-human animals. However, by using a "non-anthropocentric and non-anthropomorphic prototype definition" of religion, such as the one developed by James Harrod in his 2011 work "A Trans-Species Definition of Religion," scientists can study animal religious practices and behaviors.
Theory of mind in animals is an extension to non-human animals of the philosophical and psychological concept of theory of mind (ToM), sometimes known as mentalisation or mind-reading. It involves an inquiry into whether non-human animals have the ability to attribute mental states to themselves and others, including recognition that others have mental states that are different from their own. To investigate this issue experimentally, researchers place non-human animals in situations where their resulting behavior can be interpreted as supporting ToM or not.
Richard William Byrne is an Emeritus Professor in the School of Psychology and Neuroscience of the University of St Andrews.
Tactical deception in animals, also called functional deception, is the use by an animal of signals or displays from an animal's normal repertoire to mislead or deceive another individual.
