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Historical Overview of the Study of Animal Cognition
Early Pioneers
 Charles Darwin (1871) - the first person to suggest the possible continuity of cognitive processes
among different species. ( See Darwin, C. (1871), The descent of man and selection in relation to
sex. London: Murray.
 According to Darwin, “The difference in mind between man and the higher animals; great as it is,
certainly is one of degree and not of kind” (Darwin, 1871, p.128).
 The mechanisms responsible for evolution shaped not only a species’ anatomical characteristics
but also its psychological traits, called “mental faculties” by Darwin. He referred to “faculties” as
curiosity, imitation, attention, memory, and reasoning. (Vauclair, 1996, p.2).
 Even though Darwin accepted the existence of “beliefs” in animal species equivalent to those found
in humans, he remained cautious about attributing language and consciousness to any higher-order
nonhuman species. (Vauclair, 1996, p.2.)
 Nevertheless, he considered that some elements of language were already present in animal
communication (bird songs and primate vocalizations) and that those elements, when combined
with novel mental abilities, would inevitably lead to human language. (Vauclair, 1996, p.2).
 Because Rene Descartes believed animals to be machines, Darwin’s emphasis on continuity
among all species brought some “humanity” back to the animals.
 More important, his ideas have made the study of animal behavior an essential tool for understanding
human behavior.
 According to Vauclair (1996): “In effect, if one accepts that the human species is the product of
some ancestral nonhuman forms, then the study of animals’ mental functions becomes indispensable
for understanding the biological precursors of the human mind. (P.2).
George Romanes
 He placed animal mental functions within the context of learning abilities.
 According to Romanes, an organism can make novel adjustments or change old adaptations as a
result of its experience.
 He was the first to investigate systematically the comparative psychology of intelligence using an
anecdotal method.
 This interest in learning capacities was further developed by other comparative psychologists,
including Morgan (1894), Loeb (1900), Washburn (1908), Jennings (1906), Thorndike (1911),
and Yerkes (1911).
C.L. Morgan
 Wrote a book on: The animal mind.
 Warned against the danger of interpreting an action by reference to a higher mental faculty when it might
be explained by a lower-order schema.
 Wrote about observations made on his dog when his dog learned to lift the latch of the garden gate
and let himself out. Attempted to outline the process or steps leading to an “intelligent” behavior.
Ivan Pavlov
 Discovered the conditioned response. We use the term “Classical Conditioning.”
 Also winner of the 1904 Nobel Laureate in Medicine in recognition of his work on the physiology of
digestion, “through which knowledge on vital aspects of the subject has been transformed and enlarged.”
 (1849-1936). Born in Ryazan Russia. Studied medicine at St. Petersburg (Russia). Affiliated with the
Institute of Experimental Medicine and the Military Medical Academy (St. Petersburg).
 Worked on the physiology of circulation and digestion. Definitive work and lectures on conditioned reflexes.
Edward L. Thorndike
 Conducted the first empirical and theoretical analyses of animal learning.
 Pioneered the use of “puzzle boxes” and “mazes” to study species such as rabbits, cats, and rats.
 He was a psychologist, born in Williamsburg, MA. Studied at Wesleyan University and Harvard.
Taught at Teachers College at Columbia University, where he worked on educational psychology
and the psychology of animal learning.
 As a result of studying animal intelligence, he formulated his famous “law of effect,” which states
that a given behavior is learned by trial- and- error, and is more likely to occur if its consequences
are satisfying.
 His works include Psychology of learning (1914) and The measurement of intelligence (1926).
Robert Mearns Yerkes
 1876-1956. American psychobiologist, noted for his studies of the anthropoid apes. He was an
authority on experimental primate psychology.
 Born in Pennsylvania and educated at Ursinus College and Harvard University.
 Taught at Harvard (1902-1917) and the University of Minnesota (1917-1919). Yale University (1924-1944).
 Was in charge of psychological testing for the armed forces during WWI.
 Was chairman of the research information service of the National Research Council until 1924.
 In 1929, Yerkes organized the Yerkes Laboratories of Primate Biology, Inc., at Orange Park, Florida.
 He wrote : The mental life of monkeys and apes (1916); The mind of a Gorilla (1927); and Chimpanzees:
A laboratory colony (1943).
Wolfgang Kohler
 Developed first cognitive analysis of learning in animals.
 A psychologist trained at the University of Berlin. Was working at a primate research facility maintained
by the Prussian Academy of Sciences on Tenerife in the Canary Islands when the WWI broke out.
Marooned there, he had at his disposal a large outdoor pen and nine chimpanzees of various ages.
The pen, described by Kohler as a playground, was provided with a variety of objects, including boxes,
poles, and sticks, with which the primates could experiment.
 Kohler set the chimps a variety of problems, each of which involved obtaining food that was not
directly accessible.
 Kohler discovered that chimpanzees readily find indirect routes to goals when necessary.
E.C. Tolman
 1886-1959. Was the first researcher to prove that rats can plan novel behavior. Tolman was
the first to discover that rats had the ability to form a “cognitive map” of a maze.
Konrad Lorenz
 Was Austria’s most famous scientist, held doctorates in medicine, zoology and psychology.
 Played a key role in the development of the ethological study of animal behavior. Conducted studies
on the organization of individual and group behavior patterns.
 Discovered “imprinting” a rapid and nearly irreversible learning process occurring early in life.
He found that young animals become strongly attached to their biological mothers, but that the process
30 hours will usually not imprint.
 Imprinting is primarily triggered by visual cues and auditory stimuli. It is cue specific and relies on a
hierarch of remembered stimuli.
 Winner of the 1973 Nobel Prize for his pioneering studies of human and animal behavior, along with
Karl von Frisch and Nikolaas Tinbergen.
 Dr. Lorenz turned to research in animal behavior shortly after obtaining his medical degree.
He had become an animal lover as a child, collecting a variety of animals at his expansive boyhood
home outside Vienna. The collection included fish, dogs, monkeys, insects and especially ducks and geese.
 His first studies was on the social life of birds.
 One of his most controversial publications was the 1966 study, “On Aggression,” in which he
asserted that aggressive impulses are to some degree innate, drawing on analogies between
human and animal behavior.
 Later best-selling books included: The Eight Deadly Sins of Civilized Humanity, a plea
against overpopulation and environmental destruction; and, The Decay of the Humane, a gloomy look
at humankind’s future which sold 390,000 copies.
 Taught at Immanuel Kant University in Koenigsberg and at the University of Vienna.
 Died in April 1989 at 85 years.
Karl von Frisch
 1886-1982. Austrian zoologist. Lived in Germany. Worked at the Zoology Institute at the University
of Munich.
 Known for his pioneering work in comparative behavioral psychology, particularly his studies of the
complex communication between insects.
 He shared the 1973 Nobel Prize in medicine with Lorenz and Tinbergen.
 An important implication of his work is that behavioral continuity exists between animal communication
and human language. He switched to working on honey bees early in the century.
Nikolaas Tinbergen
 Dutch/British zoologist noted for his studies of animal behavior. He was born in the Netherlands (Hague).
 He shared the nobel prize with Lorenz and von Frisch for his work in reviving and developing the science
of animal behavior.
 Began his studies of animal behavior as a child. Was educated and taught at the Leiden University and
then joined the faculty at the University of Oxford, England.
 Published a book The Herring Gull’s World (1960) in which he describes his studies with gulls for which
he is best known, including an examination of food-begging techniques.
 His studies of the display behavior of certain species revealed that such displays result from a state
of conflict between opposing motivations (fight or flee). He also clarified the evolutionary origins of
many social signals and their subsequent ritualization.
 Beatrix Gardner studied under Tinbergen.
W. H. Furness
 Reported to the American Philosophical Society in 1916 that he had taught an orangutan, the
Asian great ape, to say the words “pap” and “cup.” His orangutan died from a high fevere while
saying “papa cup” over and over.
J.B. Watson
 Watson firmly condemned the studies of early comparative psychologists and their attempts to
describe the life of animals in its totality, including animal consciousness.
 Proposed a descriptive approach. Believed that the study of animal behavior should be limited
to relations between environmental stimulations and reactions of organisms to those stimulations.
B.F. Skinner
 Originated important ideas about behaviorism and operant conditioning.
 A major figure in the field of behaviorism and is considered to be the father of operant conditioning.
 With pigeons, he developed the ideas of “operant conditioning, “shaping behavior,” and “reinforcement.”
 Operant conditioning is a term Skinner applied to a process in which learning or behavioral change
takes place as a result of reinforcing (rewarding) the desired behavior and withholding the reward or
actively punishing undesired behaviors.
 Examples are teaching a dog new tricks, and rewarding behavior change in mental patients.
Current Pioneers
Jane Goodall
 Jane has spent more than 35 years studying the ways of chimpanzees in the wild.
 She was born in London on April 3, 1934 and grew up on the southern coast of England.
 She began studying chimpanzees in the wild in Gombe, Tanzania in 1960.
 She received her doctorate in ethology at Cambridge University.
 She founded the Gombe Stream Research Center for the study of chimpanzees and baboons.
 In 1975 she established the Jane Goodall Institute for Wildlife Research, Education, and conservation
to promote animal research throughout the world.
 She has written many books and articles on her work, including In the Shadow of Man and Reason
for Hope: A Spiritual Journey.
 Dr. Goodall was named Commander of the British Empire by Queen Elizabeth II. She also received
the prestigious Kyoto Prize in Basic Science and the National Geographical Society’s Hubbard Award
for distinction in research, exploration and discovery.
Dian Fossey
 1932-1985. An American zoologist who became the world’s leading authority on the mountain
gorilla. Completed her doctoral work at University of Cambridge in England.
 Persuaded by Louis Leakey to study the Gorrila, she established the Karisoke Research Center in 1967
and began a hermitlike existence in Rwanda’s Virunga Mountains, which was one of the last bastions of
the endangered mountain gorilla.
 Through patient effort, Fossey was able to observe the animals and accustom them to her presence, and
the data she gathered greatly enlarged contemporary knowledge of the gorilla’s habits, communication,
and social structure.
 In 1980, she returned to the U.S. to accept a visiting professorship at Cornell University. While teaching,
she completed her book, Gorillas in the Mist (1983).
 She was actively involved in stopping poachers from harming the wild animals. On December 16, 1985,
her slain body was found near her campsite. It is assumed she was killed by poachers against whom she
had struggled for so long.
 First she adopted the strategy of sneakingup silently on the gorillas and quietly observing. Later, though,
she changed her approach by announcing her presence and by imitating their sounds. After six months
she was able to approach some of the groups as close as thirty feet.
 The life of mountain gorillas was recorded in detain by Fossey. The group is usually a tightly-knit
family consisting of an adult male leader, his adult brother, or nephew, and a few adult females and
their children. They move and feed together, rarely separated by more than a hundred feet. The children
are treated very tenderly by even the largest of males. The adult males are often referred to as
“silverbacks” because the fur on their backs turn gray as they age.
Keith and Catherine Hayes
 In the late 1940s psychologist Keith Hayes and his wife, Catherine, home raised a newborn chimpanzee
named Viki. After six years of intensive and creative vocal training, Viki could whisper four words:
“mama,” “papa,” “cup,” and “up.”
 These were all made with a heavy and largely voiceless chimpanzee accent.
Allen and Beatrix Gardner
 Conducted pioneering work and study on the linguistic capabilities of apes.
 Used the technique of cross-fostering; that is, raising apes in a natural environment as if they were children.
 Best known for the innovation of teaching sign language to cross-fostered chimps which began with
Project Washoe in 1966. Washoe was taught a form of American Sign Language.
 The Gardners replicated and extended Project Washoe with four other chimpanzees, Moja, Pili, Tatu
and Dar who lived like human children from birth.
 Beatrix died suddenly on June 5, 1995, in Padua, Italy while on a European lecture tour.
 So far the Gardners have only reported main outlines of the extensive records of their 5 subjects.
They have created more than 35,000 pages of handwritten notes and many hours of film and videotape.
 The Univeristy of Nevado, Reno has established the UNR Primate Research Fund in her memory.
Write to UNR Foundation, Beatrix Gardner Memorial Fund, Mailstop 162, Reno, NV 89557.
Roger and Debbie Fouts
 Currently at Central Washington University’s Chimpanzee and Human Communication Institute (CHCI).
 Roger Fouts is Co-director of the Institute and Professor of Psychology and a Distinguished
Research Professor at CWU. His background is in experimental psychology and comparative
psychology with a specialty in animal behavior (ethology). He specializes in primate behavior,
particularly chimpanzee behavior. He has published more than 70 scientific articles and books.
 His famous book on his work over 30 years is Next of Kin, about his work with Washoe. Fouts also
houses and works with Loulis, Dar, Moja, and Tatu, all originally cross-fostered by Allen and Beatrix Gardner.
 Roger and Debbie Founts founded Friends of Washoe, a non-profit organization dedicated to the welfare
of chimpanzees and other fellow animals. In 1992, they founded the Chimpanzee and Human
Communication Institute (CHCI) at CWU.
 Recent research at the CHCI has focused on the private signing of the chimpanzees, imaginary play
and signing, chimpanzee to chimpanzee conversations, conversation repair, representational drawing,
and the symbolic representation of spatial relations with ASL signs.
 The Foutses are beginning a new research direction and will be studying four different free-living
communities of chimpanzees in Africa to record and analyze their behavior for gestural dialects.
John C. Lilly
 Is a physician and psychoanalyst specializing in biophysics, neurophysiology, electronics, computer
theory, and neuroanatomy.
 He is inventor of the isolation tank method of exploring consciousness. This work led him to
interspecies communication research projects between man and dolphin.
 Did early controversial work on dolphin’s ability to talk. Go to his web page to listen to the dolphin
 Lilly has spent 23 years working with dolphins. He founded the Human/Dolphin Foundation. His lab is
in the Virgin Islands.
Ken Marten
 Project Delphis is a conservation effort to save wild dolphins, as well as a dolphin behavior and
cognition research project.
 Their purpose is to save the dolphins in the ocean from the holocaust they are currently experiencing
by learning everything about their intelligence and sharing these finds with the global public in an effort
to raise their understanding and awareness.
 The are located at Sea Life Park in Honolulu, Hawaii where they have an underwater viewing laboratory
and conduct research on perception and self-consciousness.
 Ken Marten is the principal investigator at Project Delphis. He is an experienced animal cognition
researcher and former observer on purse-seine tuna boats.
Louis Herman
 Founded the Kewalo Basin Marine Mammal Laboratory (KBMML) in Honolulu, Hawaii in 1969. It
was conceived as a research and educational facility dedicated to the laboratory and field study of
dolphin and whale behavior, including species resident in Hawaiin waters.
 It is the only facility of its kind devoted entirely to the study of dolphin cognition, communication,
and intelligence.
 The Dolphin Institute was founded in 1993 by Louis Herman and Adam Pack and several friends of the
25 year old Kewalo Basin Marine Mammal lab. It is an evolution of KBMML. TDI is relocating to a new
site because the Hawaiian government has asked the KBMML to relocate its facilities to another area
to make room for an expansion of Kewalo Basin Park.
 Dr. Herman is a pioneer in studies of dolphin perception, intelligence, concept formation, and
language competencies. He also pioneered KBMML’s studies of the social organization and
behavior, migratory habits, mating strategies, and communication systems of North Pacific humpback
whales, in Hawaii and southeast Alaska.
 Dr. Herman is a tenured professor at the University of Hawaii with appointments in Psychology
and Oceanography. He oversees all operations of the laboratory.
H. Lyn Miles
 A biocultural anthropologist interested in the evolution of human symbol systems, how cultural processes
interact with language and evolution, and what orangutans can tell us about language and intelligence.
 She cross-fostered Chantek and began her work with him at 9 months of age in a trailer on the campus
of the University of Tennessee at Chattanooga. She taught him the human culture and American Sign
Language. Chantek had a pet squirrel and cat; asked to go for car rides to the lake, park and fast food
restaurants, and even went to the circus.
 Chantek has a vocabulary of over 150 signs after several years and comprehends the spoken English
language.
 Founded the Chantek Foundation to support cultural research with Chantek, an orangutan that Lyn has
been working with for more than 20 years.
 The foundation seeks support to understand the nature of orangutan communicative ability and intelligence,
to foster the development of orangutan and other great ape persons in a primate cultural center and to
promote orangutan conservation through awareness.
 In 1986, Project Chantek moved to the Division of Behavioral Biology at the Yerkes Regional Primate
Research Center, and in 1997, Project Chantek moved to Zoo Atlanta where Dr. Miles’ research with
Chantek continues.
 Lyn Miles received her PH.D. in Anthropology from the University of Connecticut. Also did course work
at Yale University and the Unviersity of Oklahoma. She is currently professor of Anthropology at the
University of Tennessee at Chattanooga and Senior Research Fellow at Zoo Atlanta. She lives in
Atlanta since 1993.
 She is co-editor of The Mentality of Gorillas and Orangutans. She is currently working on a book,
Chantek: The Enculturated Orangutan.
 She teaches courses in physical anthropology, primate behavior, ape language, and cognitive and linguistic anthropology.
Sally Boysen
 Has been studying primate cognition at Ohio State University for more than 20 years. She received her
Ph.D. in 1984 from Ohio State.
 Her current research interests are animal cognition, with particular interst in the acquisition of counting
abilities and numerical competence in nonhuman primates, cognitive development in great apes,
including attribution, self-recognition, and intentional behavior, and social behavior and tool use in
captive lowland gorillas.
 She has conducted collaborative research with Gary Berntson on the application of non-invasive psycho
physiological measures to attention and cognition in primates, and cardiac indices of visual and auditory
recognition in the great apes.
 She is currently raising money to build a new primate research facility on the Ohio State campus.
 Her chimpanzees live in elaborate furnished facilities with chairs and the furnishings of a home or apartment.
Francine G. “Penny” Patterson
 For 25 years, Francine Patterson has been communicating with Koko, a gorilla. She began to study communication
with Koko by means of sign language in 1972.
 She received her doctorate in developmental psychology from Stanford University in 1979.
 She founded and is President of the Gorilla Foundation which serves as a trust on behalf of Koko
and the other gorillas she works with. Founded in 1976, the Gorilla Fouondation promotes study and
preservation of gorillas and other endangered primates. “Project Koko,” is a primary focus of the
foundation and focuses on gaining insights into the mind of another species through language.
 There were originally three gorillas at the Foundation, Koko, Michael and Ndume. Michael recently
died in April. Koko is still mourning Michael’s death.
 Koko’s and Michael’s art is world renowned.
 The Gorilla Foundation will soon be moving its home to Maui, Hawaii, where ground breaking ceremonies
will take place on October 12, 2000 for the Allan G. Sanford Sanctuary, a unique refuge for these primates.
 The sanctuary will be part of the Koko Preserve, which will also encompass the high-tech Koko visitor
center and will allow for live virtual interactions with Koko and observation of her family via virtual viewing
of the sanctuary.
Irene M. Pepperberg
 Works with the parrot, Alex. Interested in avian communication.
 Since 1977, Dr. Pepperberg’s studies in Ethology and animal-human communications have provided
insight into the capabilities of parrots to talk and to understand. Interested in interspecies communication
and conceptual behavior.
 She currently works with 3 Congo African Grey Parrots. Alex, the oldest, can count, identify objects,
shapes, colors and materials. Alex also knows the concepts of same and different. They have now
begun to work with phonics and there is evidence to believe that one day Alex may be able to read.
 Dr. Pepperberg believes that her work has far reaching implications:
 Studies of avian versus mammalian brain function: Given that the avian brain can process
information in similar ways, Dr. Pepperberg’s procedures may assist clinicians who are
devising programs for brain-damaged humans.
 Programs for teaching language to dysfunctional children: Dr. Pepperberg’s training techniques
are being used for developmentally delayed children.
 Targeting parrots for wildlife conservation initiatives: If parrots are as intelligent as chimpanzees
and dolphins, shouldn’t we make the same attempts to save them and their habitat as we are
making for these other species?
 Dr. Pepperberg is currently associate professor in the department of ecology and evolutionary biology at
the University of Arizona at Tucson, with a joint appointment in Department of Psychology and an affiliate
in the program in neuroscience.
Frans B. M. De Waal
 Was trained as an ethologist in the European tradition. He received his Ph.D. from the University of Utrecht
in 1977.
 After a six-year study of the chimpanzee colony at the Arnhem Zoo, he moved to the U.S. in 1981 to work
on other primate species, including bonobos.
 He is a research professor at the Yerkes Regional Primate Research Center, Candler Professor of
Primate Behavior, Professor of Psychology, and Director of the Living Links Center at Emory University
in Atlanta.
 He is a world-renowned primatologist. He has authored several books, including Chimpanzee Politics
(1982); Good Natured: The Origins of Right and Wrong in Humans and Other Animals (1996); and
Bonobo: The Forgotten Ape (1997).
 He has also published on the sexual habits of Bonobos and their sense of self-esteem.
Matsuzawa Tetsuro
 Works at the Primate Research Institute at Kyoto University in Japan.
 Works with the chimpanzee, Ai.
 Uses lexigrams to study language abilities in chimpanzees. Ai has learned to write the alphabets.
Rob Shumaker
 Coordinates the Orang utan Language Project (OLP) at the National Zoo’s think tank.
 Orangs cross overhead between the Great Ape House and the Think Tank building via tall towers and
long vinyl-covered cables.
 Shumaker is teaching the orangs a language composed of abstract symbols. He also focuses on how
their knowledge of this language will be transferred and possibly taught to other orangs not instructed
by trainers.
 The language is a computer based form designed by Shumaker and centered on abstract symbols that
each represents a word.
 Words are broken down into seven categories: food, activities (verbs), adjectives, non-food objects,
human names, orang names, and numbers. Each category has a distinct exterior shape. For example,
food items are characterized by rectangles. Verb activities are defined by diamond shapes.
Marc Hauser
 Professor of Psychology at Harvard University in the Department of Psychology. Conducts primate research.
 He and his colleagues have found that monkeys such as the cotton-top tamarin can distinguish between
two languages, an ability once thought to be exclusively human.
 Hauser believes that humans inherited the ability to process speech from ancestors that they have in
common with monkeys and apes.
 He says that monkeys can tell the difference between Dutch and Japanese as easily as human infants.
Sue Savage-Rumbaugh
 Sue Savage-Rumbaugh says that the ovearching goal of the research undertaken by her Center was
to develop technologies and teaching strategies designed to facilitate the learning of language by
persons with mental retardation.
 She has worked with a number of chimpanzees and is now working with the Bonobo ape-Kanzi and family.
 Kanzi is a lab reared Bonobo and his training has led to his acquisition of linguistic and cognitive
abilities similar to a 2 year old.
 Sue Savage-Rumbaugh does her work out of Georgia State University, Language Research Center.
She is professor of biology and psychology.
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