The Study of Animal Behavior Flashcards
ethology
Biologists and veterinary specialists refer to the study of animal behavior as ethology.
Charles Darwin (1809–1882).
The entire field of biology, including ethology, was revolutionized in the nineteenth century by British scientist Charles Darwin (1809–1882). After graduating from Cambridge University in 1831, the 22-year-old Darwin traveled aboard the English survey ship HMS Beagle as an unpaid naturalist on a scientific expedition around the world. The expedition allowed Darwin to study an enormous variety of fossils and living creatures.
On the Origin of Species
theory of evolution by Darwin, the book was published in 1859
On the Origin of Species introduced the theory of evolution, which characterizes all related organisms as descended from common ancestors.
Darwin devoted an entire chapter to animal behavior, most of which he believed was generated by a combination of unlearned responses characteristic of a species, or instinct.
Ivan Pavlov (1849–1936).
One of the first scientists to question the all-encompassing role of instinct was a Russian physiologist named Ivan Pavlov (1849–1936).
Ivan Pavlov provided compelling evidence that animal behavior wasn’t based entirely on instinct.
unconditioned stimulus
something that produces an unconditioned response (like the hammer tapping the patient’s knee).
the school of animal psychology was founded on Pavlov’s discovery
that animals could learn to build novel associations between various stimuli, and therefore develop novel responses to their environment.
behaviorism
which holds that behavior is learned rather than genetically programmed/
Behaviorism originated with American psychologist John B. Watson, who proposed an approach to psychology based on objective laboratory procedures. His experiments led him to formulate a stimulus-response theory of psychology, which holds that all complex forms of behavior, including emotions, thoughts, and habits, are complex muscular and glandular responses that can be observed and measured. Watson claimed that emotional reactions are learned in much the same way as other skills.
John B. Watson claims
Watson claimed that emotional reactions are learned in much the same way as other skills.
Behaviorists recognized two general categories of conditioned learning
Classical conditioning—based on Pavlov’s experiments—refers to the association of stimuli that occur at approximately the same time or in roughly the same area.
Operant conditioning works on the principle of associating a certain activity, known as the operant (functioning or tending to produce effects), with punishment or reward.
operant
functioning or tending to produce effects, with punishment or reward.
B. F. Skinner (1904–1990)
Probably the foremost expert on the mechanism of operant conditioning was the American psychologist B. F. Skinner (1904–1990). A classic example of the experiments he devised was teaching a rat to press a bar for food. The experiment proceeded in stages. First, the rat was rewarded simply for facing the correct end of the cage. In the second stage, the rat was rewarded only when it stood next to the bar. Subsequent stages successively delayed the reward until the rat touched the bar with its body. Such conditioning used specific environmental responses to shape the rat’s behavior to a specific task.
nature-nurture controversy
The distinction between animal psychologists and the classical ethologists became the stuff of caricature: psychologists put animals in boxes and look inside to see what they do, while ethologists put themselves in boxes and look outside to see what the animals around them do. The crux of these two opposing schools came to be called the nature-nurture controversy, with the psychological school stressing the importance of learning, or nurture, while the ethological school stressed the primacy of instinct, or nature.
Sociobiology
he study of the biological basis of the social behavior, seeks to extend the concept of natural selection to the social behavior of animals.
Sociobiologists theorize that complex social patterns arise, develop, and sometimes even disappear based on their survival value.
The sociobiological approach has fostered a deeper understanding of how environmental influences specifically affect animal behavior.
Nobel Prize
In 1973, the ethologists Niko Tinbergen, Karl von Frisch, and Konrad Lorenz shared a Nobel Prize for their discoveries about the ways individual and social behavior patterns develop in groupings of animals.
Classical conditioning
based on Pavlov’s experiments—refers to the association of stimuli that occur at approximately the same time or in roughly the same area.