Chapter 15 Flashcards
behavior
the way an organism responds to changes in its internal or external environment
A behavior can be
innate or learned
Innate behavior
Learned behavior
‘inborn’ , for ex. running for shelter upon hearing a loud noise
something that;s taught , for ex. children sharing
Ethology
the study of behavior and its relationship to its evolutionary origins
Karl von Frisch
known for his extensive studies of honeybee communication and his famous description of the bee ‘waggle’ dance
Niko Tinbergen
known for his elucidation of the fixed action pattern
Konrad Lorenz
famous for his work with imprinting
FAP
fixed action pattern
-innate, highly stereotypical behavior that, once begun, is continued to completion no matter how useless or silly looking
FAPs are initiated by
external stimuli called sign stimuli
-when these stimuli are exchanged between members of the same species , they are known as releasers
Example of a FAP
studied by tinbergen
- involves the stickleback fish, which attacks other males that invade its territory
- stickleback won’t attack an invading male stickleback lacking a red underbelly, but will attack a nonfishlike wooden model as long as a splash of red is visible
Learning
a sophisticated process in which the responses of the organism are modified as a result of experience
What is the capacity to learn tied to?
- length of life
- complexity of the brain
Short life span
Long life span
- has no time to learn, even if it has the ability, therefore, it must rely on fixed action patterns
- a large part of its behavior is dependent on prior experience and learning
Habituation
one of the simplest forms of learning in which an animal comes to ignore a persistent stimulus so it can go about its business
Hydra Example w/ Habituation
- if you tap a dish w/ a hydra, it will quickly shrink and become immobile
- if you keep tapping, after a while the hydra will begin to ignore the tapping, elongate, and continue moving about
- it has become habituated or used to the stimulus
Associative Learning
1 type of learning in which 1 stimulus becomes linked to another through experience
Examples of associative learning
classical conditioning
operant condition
Why is classical conditioning widely accepted?
Ivan Pavlov, 1920s
- dogs salivate when exposed to food
- pavlov trained dogs to associate the sound of a bell w/ food
- result of this conditioning, dogs would salivate, an automatic response, upon merely hearing the sound of the bell even though no food was present
Operant Conditioning
is also called trial and error learning
-an animal learns to associate 1 of its own behaviors with a reward or punishment and then repeats or avoids that behavior
Best Known Operant Conditioning Experiment
- done by B.F. Skinner in 1930s
- rat placed in cage w/ lever that released a pellet of food
- at first, the rat would depress the level by accident and receive food as a reward
- rat soon learned to associate the lever w/ the food and depressed it at will
In operant conditioning, animals can also
learn to carry out a behavior to avoid punishment
-such systems of rewards and punishment are the basis of most animal training
Imprinting
learning that occurs during a sensitive or critical period in the early life of an individual and is irreversible for the length of that period
Imprinting
learning that occurs during a sensitive or critical period in the early life of an individual and is irreversible for the length of that period
When you see ducklings following closely behind their mother,
you are seeing the result of successful imprinting
Mother-offspring bonding in animals that depend on parental care is critical to
the safety and development of the offspring
What happens if the mother-offspring pair doesn’t bond?
the parent will not care for the offspring and the offspring will die
at the juvenile period, when the offspring can survive without the parent, the response disappears
Classical Imprinting Experiment
- carried out by Konrad Lorenz
- geese hatchlings follow the first thing they see that moves (the object is usually the mother goose, in this experiment it was Konrad)
- Konrad was the first thing the hatchlings saw and they became imprinted on the scientist
- wherever he went, they followed
Social Behavior
any kind of interaction between 2 or more animals, usually of the same species
-relatively new field of study, only developed in the 1960s
Types of social behavior include
cooperation agonistic dominance hierarchies territoriality altruism
Cooperation
enables individuals to carry out a behavior, such as hunting, which would be more successful done in a group than separately
Agonistic Behavior
aggressive behavior
-involves a variety of threats or actual combat to settle disputes between individuals
Agonistic Behavior:
Disputes are usually over
food
mates
shelter
Agonistic behavior involves both
real aggressive behavior as well as ritualistic or symbolic behavior