Human ethology is the study of human behavior. Ethology as a discipline is generally thought of as a sub-category of biology, though psychological theories have been developed based on ethological ideas (e.g. sociobiology, evolutionary psychology, attachment theory, and theories about human universals such as gender differences, incest avoidance, mourning, hierarchy and pursuit of possession). The bridging between biological sciences and social sciences creates an understanding of human ethology. The International Society for Human Ethology is dedicated to advancing the study and understanding of human ethology.
Ethology has its roots in the study of evolution, especially after evolution's increasing popularity after Darwin's detailed observations. It became a distinct discipline in the 1930s with zoologists Konrad Lorenz, Niko Tinbergen and Karl Von Frisch. [1] These three scientists are known as the major contributors to human ethology. They are also regarded as the fathers or founders of ethology. Konrad Lorenz and Niko Tinbergen rejected theories that relied on stimuli and learning alone, and elaborated on concepts that had not been well understood, such as instinct. They promoted the theory that evolution had placed within creatures innate abilities and responses to certain stimuli that advanced the thriving of the species. Konrad Lorenz also indicated in his earlier works that animal behavior can be a major reference for human behavior. He believed that the research and findings of animal behaviors can lead to findings of human behaviors as well. In 1943, Lorenz devoted much of his book, Die angeborenen Formen moglicher Erfahrung, to human behavior. He designated that one of the most important factors of ethology was testing the hypothesis derived from animal behavioral studies on human behavioral studies. Due to Lorenz promoting the similarities between studying animal and human behavior, human ethology derived from the study of anima behavior. [2] The other founders of ethology, Niko Tinbergen and Karl von Frisch, received a Nobel Prize in 1973, for their overarching career discoveries concerning organization and elicitation of individual and social behavior patterns.
Many developmental psychologists were eager to incorporate ethological principles into their theories as a way of explaining observable phenomenon in babies that could not necessarily be explained by learning or other concepts. John Bowlby and Mary Ainsworth used ethology prominently to explain aspects of infant-caretaker attachment theory. [3] Some important attachment concepts related to evolution:
In later years, ethology played a large role in sociobiological theory and ultimately, in evolutionary psychology, which is a relatively new field of study. Evolutionary psychology combines ethology, primatology, anthropology, and other fields to study modern human behavior to adaptive ancestral human behaviors.
As applied to human behavior, in the majority of cases, topical behavior results from motivational states and the intensity of a specific external stimulus. Organisms with a high inner motivational state for such a stimulus is called appetitive behavior. Other important concepts of zooethology—e.g., territoriality, hierarchy, sensitive periods in ontogenesis—are also useful when discussing human behavior. Irenäus Eibl-Eibesfeldt's book Human Ethology [7] is most important for how these concepts are applied to human behavior.
Human ethology has contributed in two particular ways to our understanding of the ontogeny of behavior in humans. This has resulted, first, from the application of techniques for the precise observation, description and classification of naturally occurring behavior and, secondly, from the ethological approach to the study of behavior, especially the development of behavior in terms of evolution. Of particular interest are questions relating to the function of a particular kind of behavior (e.g., attachment behavior) and its adaptive value. The description of the behavioral repertoire of a species, the recognition of patterns of behavioral development and the classification of established behavioral patterns are prerequisites for any comparison between different species or between organisms of a single species. The ethological approach is the study of the interaction between the organism with certain innate species-specific structures and the environment for which the organism is genetically programmed.
Invariant behavior patterns have a morphological basis, mainly in neuronal structures common to all members of a species and, depending on the kind of behavior, may also be common to a genus or family or a whole order, e.g., primates, or even to a whole class, e.g., mammals. In such structures we can retrace and follow the evolutionary process by which the environment produced structures, especially nervous systems and brains, which generate adaptive behavior. In organisms with a high level of organization, the processes in which the ethologist is especially interested are those genetically preprogrammed motor and perceptual processes that facilitate social interaction and communication, such as facial expression and vocalization. If we consider the most highly developed means of communication, language and speech, which is found in humans alone, the question arises as to the biological foundation of this species-specific behavior and perceptual skill. The ethologist examines this question primarily from the point of view of ontogenetic development.
The main strength of human ethology has been its application of established interpretive patterns to new problems. Based on theories, concepts and methods that have proved successful in animal ethology, it looks at human behavior from a new viewpoint. The essence of this is the evolutionary perspective. But since ethologists have been relatively unaffected by the long history of the humanities, they often refer to facts and interpretations neglected by other social sciences. If we look back at the history of the relationship between the life sciences and the social sciences, we find two prevailing modes of theoretical orientation: on the one hand, reductionism, i.e., attempts to reduce human action to non-cognitive behavior; and on the other, attempts to separate human action and human society from the animal world completely. The advent of the theory of evolution in the 19th century brought no easy solution to the problem of nature and nurture, since it could still be "solved" in either a continuous or discontinuous manner. Human ethology as much as any other discipline significantly contributes to the obsolescence of such simple dichotomies.
Human Ethology has an increasing influence on the dialogue between Human Sciences and Humanities as shown for example in the book Being Human - Bridging the Gap between the Sciences of Body and Mind. [8]
Ethologists study behavior using two general methods: naturalistic observation and laboratory experimentation. Ethologist's insistence on observing organisms in their natural environment differentiates ethology from related disciplines such as evolutionary psychology and sociobiology, and their naturalistic observation "ranks as one of their main contributions to psychology", [4] Naturalistic Observation Ethologists believe that in order to study species-specific behaviors, a species must be observed in its natural environment. One can only understand the function of a behavior by seeing how it specifically fits into the species natural environment to fulfill a specific need. Ethologists follow a specific set of steps when studying an organism:
Ethogram | A detailed description of the behavior of a species in its natural environment |
Classification | Classify behaviors according to their function (how they encourage survival). |
Compare | Compare how a behavior functions in different species and how different behaviors may serve the same function in other species. |
Laboratory Experiments | Determine the immediate causes of the behavior described in the first three steps. |
These steps fall in line with Tinbergen's "On Aims of Methods of Ethology" [9] in which he states that every study of behavior must answer four questions to be considered legitimate:
Diversity is an important concept in ethology and evolutionary theory, both genetically and culturally.
Genetic diversity serves as a way for populations to adapt to changing environments. With more variation, it is more likely that some individuals in a population will possess variations of alleles that are suited for the environment. Those individuals are more likely to survive to produce offspring bearing that allele. The population will continue for more generations because of the success of these individuals. Population genetics includes several hypotheses and theories regarding genetic diversity. The neutral theory of evolution proposes that diversity is the result of the accumulation of neutral substitutions. Diversifying selection is the hypothesis that two subpopulations of a species live in different environments that select for different alleles at a particular locus. This may occur, for instance, if a species has a large range relative to the mobility of individuals within it.
Cultural diversity is also important. From a cultural transmission standpoint, humans are the only animals to pass down cumulative cultural knowledge to their offspring. While chimpanzees can learn to use tools by watching other chimps around them, but humans are able to pool their cognitive resources to create increasingly more complex solutions to problems and more complex ways of interacting with their environments. The diversity of cultures points to the idea that humans are shaped by their environments, and also interact with environments to shape them as well. Cultural diversity arises from different human adaptations to different environmental factors, which in turn shapes the environment, which in turn again shapes human behavior. This cycle results in diverse cultural representations that ultimately add to the survival of the human species. This approach is important as a way to build a bridge between biological and social sciences, which creates a better understanding of human ethology. [10]
One example of human diversity is sexual orientation. Ethologists have long noted that there are over 250 species of animals which display homosexual behaviors. Although no offspring are directly created from homosexual behaviors, a closer look reveals how the genes for homosexuality can persist. Homosexuality could decrease competition for heterosexual mates. Homosexual family members could increase the resources available to the children of their siblings without producing offspring to compete for those resources (the gay uncle theory), thus creating better chances for their siblings' offspring to survive. These related offspring share the homosexual individual's genes—although to a lesser extent than direct offspring would—including genes for homosexuality. This causes a small but stable chance for future generations to be gay as well, even if the gay family member produces no direct descendants.
Ethology is a branch of zoology that studies the behaviour of non-human animals. It has its scientific roots in the work of Charles Darwin and of American and German ornithologists of the late 19th and early 20th century, including Charles O. Whitman, Oskar Heinroth, and Wallace Craig. The modern discipline of ethology is generally considered to have begun during the 1930s with the work of the Dutch biologist Nikolaas Tinbergen and the Austrian biologists Konrad Lorenz and Karl von Frisch, the three winners of the 1973 Nobel Prize in Physiology or Medicine. Ethology combines laboratory and field science, with a strong relation to neuroanatomy, ecology, and evolutionary biology.
Evolutionary psychology is a theoretical approach in psychology that examines cognition and behavior from a modern evolutionary perspective. It seeks to identify human psychological adaptations with regards to the ancestral problems they evolved to solve. In this framework, psychological traits and mechanisms are either functional products of natural and sexual selection or non-adaptive by-products of other adaptive traits.
Konrad Zacharias Lorenz was an Austrian zoologist, ethologist, and ornithologist. He shared the 1973 Nobel Prize in Physiology or Medicine with Nikolaas Tinbergen and Karl von Frisch. He is often regarded as one of the founders of modern ethology, the study of animal behavior. He developed an approach that began with an earlier generation, including his teacher Oskar Heinroth.
Nikolaas "Niko" Tinbergen was a Dutch biologist and ornithologist who shared the 1973 Nobel Prize in Physiology or Medicine with Karl von Frisch and Konrad Lorenz for their discoveries concerning the organization and elicitation of individual and social behavior patterns in animals. He is regarded as one of the founders of modern ethology, the study of animal behavior.
Instinct is the inherent inclination of a living organism towards a particular complex behaviour, containing innate (inborn) elements. The simplest example of an instinctive behaviour is a fixed action pattern (FAP), in which a very short to medium length sequence of actions, without variation, are carried out in response to a corresponding clearly defined stimulus.
Comparative psychology is the scientific study of the behavior and mental processes of non-human animals, especially as these relate to the phylogenetic history, adaptive significance, and development of behavior. The phrase comparative psychology may be employed in either a narrow or a broad meaning. In its narrow meaning, it refers to the study of the similarities and differences in the psychology and behavior of different species. In a broader meaning, comparative psychology includes comparisons between different biological and socio-cultural groups, such as species, sexes, developmental stages, ages, and ethnicities. Research in this area addresses many different issues, uses many different methods and explores the behavior of many different species, from insects to primates.
On Aggression is a 1963 book by the ethologist Konrad Lorenz; it was translated into English in 1966. As he writes in the prologue, "the subject of this book is aggression, that is to say the fighting instinct in beast and man which is directed against members of the same species."
Edward John Mostyn Bowlby, CBE, FBA, FRCP, FRCPsych was a British psychiatrist, and psychoanalyst, notable for his interest in child development and for his pioneering work in attachment theory. A Review of General Psychology survey, published in 2002, ranked Bowlby as the 49th most cited psychologist of the 20th century.
Cognitive ethology is a branch of ethology concerned with the influence of conscious awareness and intention on the behaviour of an animal. Donald Griffin, a zoology professor in the United States, set up the foundations for researches in the cognitive awareness of animals within their habitats.
"Fixed action pattern" is an ethological term describing an instinctive behavioral sequence that is highly stereotyped and species-characteristic. Fixed action patterns are said to be produced by the innate releasing mechanism, a "hard-wired" neural network, in response to a sign/key stimulus or releaser. Once released, a fixed action pattern runs to completion.
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.
Robert Aubrey Hinde was a British zoologist, ethologist and psychologist. He served as the emeritus Royal Society research professor of zoology at the University of Cambridge. Hinde is best known for his ethological contributions to the fields of animal behaviour and developmental psychology.
Tinbergen's four questions, named after 20th century biologist Nikolaas Tinbergen, are complementary categories of explanations for animal behaviour. These are also commonly referred to as levels of analysis. It suggests that an integrative understanding of behaviour must include ultimate (evolutionary) explanations, in particular:
Attachment theory, originating in the work of John Bowlby, is a psychological, evolutionary and ethological theory that provides a descriptive and explanatory framework for understanding interpersonal relationships between human beings.
Irenäus Eibl-Eibesfeldt was an Austrian ethologist in the field of human ethology. In authoring the book which bears that title, he applied ethology to humans by studying them in a perspective more common to volumes studying animal behavior.
The history of evolutionary psychology began with Charles Darwin, who said that humans have social instincts that evolved by natural selection. Darwin's work inspired later psychologists such as William James and Sigmund Freud but for most of the 20th century psychologists focused more on behaviorism and proximate explanations for human behavior. E. O. Wilson's landmark 1975 book, Sociobiology, synthesized recent theoretical advances in evolutionary theory to explain social behavior in animals, including humans. Jerome Barkow, Leda Cosmides and John Tooby popularized the term "evolutionary psychology" in their 1992 book The Adapted Mind: Evolutionary Psychology and The Generation of Culture. Like sociobiology before it, evolutionary psychology has been embroiled in controversy, but evolutionary psychologists see their field as gaining increased acceptance overall.
The theoretical foundations of evolutionary psychology are the general and specific scientific theories that explain the ultimate origins of psychological traits in terms of evolution. These theories originated with Charles Darwin's work, including his speculations about the evolutionary origins of social instincts in humans. Modern evolutionary psychology, however, is possible only because of advances in evolutionary theory in the 20th century.
Margret Else Schleidt was a German human ethologist. She worked at the Max-Planck-Institut für Verhaltensphysiologie, which has now become the Max-Planck Institute for Ornithology.
The International Society for Human Ethology is an international learned society dedicated to the study of human ethology. It was founded in 1972, with Irenaus Eibl-Eibesfeldt, Daniel G. Freedman, and William Charlesworth all playing key roles in its establishment; Eibl-Eibesfeldt also served as the society's first president. It publishes the peer-reviewed scientific journal Human Ethology.
Wolfgang M. Schleidt is an Austrian scientist specializing in the areas of bioacoustics, communication and classical ethology. He was assistant to Konrad Lorenz, professor of zoology at the University of Maryland (1965–1985) and director at the Konrad Lorenz Institute for Ethology, Vienna of the Austrian Academy of Sciences. He was an early pioneer of bioacoustics and of the quantitative analysis of behavior.