Chapter 12-Behaviorism Flashcards
Shared Sechenov’s goal of creating a totally objective psychology. Focused his study on the conditioned and unconditioned stimuli that control behavior and on the physiological processes that they initiate. For him, all human behaviour is reflexive
Ivan Pavlov
The reduction or cessation of activity caused by stimulation, such as when extinction causes a conditioned stimulus to inhibit a conditioned response. It was Sechenov’s Discovery of inhibitory mechanisms in the brain that led him to believe that all human behavior could be explained in terms of brain physiology
Inhibition
Describe Pavlov’s work in studying the digestive processes
Using a patient who had suffered a severe gunshot wound to the stomach and recovered but had an open hole in his body through which his internal organs could be observed, Pavlov observed his internal processes, including those of the digestive system and perfected his technique for studying digestion.
He prepared a gastric fistula-a channel-leading from a dog’s digestive organs to outside the dogs body. He performed hundreds of experiments to determine how the amount of secretion through the fist you love varied as a function of different types of stimulation to the digestive system which one him the 1904 Nobel Prize in physiology
A learned reflex
Conditioned reflex
Describe Pavlov’s discovery of the conditioned reflex
While studying the secretion of the dogs gastric juices in response to such substances as meat powder, pavlov noticed that objects or events associated with meat powder also caused stomach secretions-for example, the mere sight of the experimenter or the sound of his or her footsteps. He referred to these latter responses as conditional because they depended on something else-for example, meet powder
Describe Pavlov’s personality
He was a positivist and was totally dedicated to his laboratory work. He wrote very little. He encouraged both women and Jewish students to study in his laboratory, a practice very uncommon at the time. One thing he had no tolerance for was mentalism-if researchers in his laboratory used mentalistic terminology to describe their feelings, he fined them
In his private life, however, Pavlov was a completely different person. He was sentimental, impractical, and absent-minded-often arousing the wonder and amusement of his friends. He often forgot to pick up his pay, and often loaned it to irresponsible acquaintances. Him and his wife lived in extreme poverty during the early years of their marriage but she continued to give him her complete support.
An unlearned reflex
Unconditioned reflex
A stimulus that elicits an unconditioned response
Unconditioned stimulus
An innate response elicited by the unconditioned stimulus that is naturally associated with it
Unconditioned response
A previously biologically neutral stimulus that, through experience, comes to elicit a certain response
Conditioned stimulus
A response elicited by a conditioned stimulus
Conditioned response
Describe Pavlov’s Believe about the process of formation of a conditioned reflex
And unconditioned reflex is innate and is triggered by an unconditioned stimulus, for example, placing food powder in a hungry dogs mouth will increase the dog saliva flow. The food powder is the unconditioned stimulus, and the increased salvation is the unconditioned response.
Pavlov called a biologically neutral stimulus a conditioned stimulus. Because of its contiguity with an unconditioned stimulus, in this case food, this previously neutral stimulus developed the capacity to elicit some fraction of the unconditioned response, in this case salivation.
When a previously neutral stimulus a conditioned stimulus, elicits some fraction of an unconditioned response, the reaction is called a conditioned response. Thus, a dog salivating to the sound of an attendants footsteps exemplifies a conditioned response
According to Pavlov, brain activity that leads to overt behavior of some type
Excitation
According to Pavlov, the pattern of points of excitation and inhibition that characterizes the cortex at any given moment
Cortical mosaic
The elimination or reduction of a conditioned response that results when a conditioned stimulus is presented but is not followed by the unconditioned stimulus
Extinction
The reappearance of a conditioned response after a delay following extinction
Spontaneous recovery
The inhibition of an inhibitory process. Is demonstrated when, after extinction, a loud noise causes the conditioned response to appear
The assumption was that the fear caused by the strong stimulus displaces the inhibitory process, thus allowing the return of the conditioned response
Disinhibition
The neurotic behavior that pavlov created in some of his laboratory animals by bringing excitatory and inhibitory tendencies into conflict
Example: showing a dog a circle is always followed by food and showing a dog an ellipse is never followed by food. According to Pavlov, the circle will come to elicit salivation and the ellipse will inhibit salivation. If the circle increasingly becomes more elliptical and the circle and the ellipse become indistinguishable, The excitatory and the inhibitory tendencies will conflict, and the animals behavior will break down
Experimental neurosis
According to Pavlov, those objects or events that become signals for the occurrence of biologically significant events, such as when a tone signals the eventuality of food
First-signal system
Innate processes are expanded by conditioning. As biologically neutral stimuli (CSs) are consistently associated with biologically significant stimuli (USs), The former come to signal the biologically significant events. The adaptive significance of such signals should be obvious; if an animal is warned that something either conducive or threatening to survival is about to happen, it will have time to engage in appropriate behavior