Learning Theory Classical Flashcards
Unconditioned stimulus
A stimulus that leads to an automatic response.
Pavlov: the meat powder was the US.
Conditioned Stimulus
Situation in which stimulus is given just before another signal.
Unconditioned response
Automatic response to a stimulus
Pavlov’s dogs: salivating was the UR
Conditioned Response
Automatic response established by training (conditioned stimulus).
Delay conditioning
Type of forward conditioning and involves presenting the CS so that it precedes and overlaps presentation of the US.
Best time interval is .5 seconds.
Most efficient procedure for establishing a conditioned response.
Trace conditioning
Type of forward conditioning that entails presenting and terminating the CS prior to presenting the US. Produces a weaker CR than does delay conditioning.
Simultaneous conditioning
Less effective than trace conditioning. Involves presenting and withdrawing the CS and US at the same time.
Backward conditioning
Entails presenting the US prior to the CS. Does not usually produce a CR. Underlies classical conditioning.
Number of conditioning trials
The greater the number of conditioning trials, the stronger and more persistent the CR.
Regardless of number of trials, CR is usually weaker in intensity or magnitude than the UR.
Pre-exposure to the CS or US
Repeated exposure to the US or intended CS before the CS and US are paired slows down acquisition of the CR.
Classical extinction
The gradual disappearance of a conditioned response as the result of repeated presentation of the CS alone
Spontaneous recovery
A conditioned response is suppressed rather than eliminated by extinction trials. Learning is never lost, merely inhibited.
Stimulus generalization
when the subject responds with a conditioned response not only to the CS but also to stimuli similar to the CS.
Stimulus Discrimination
The ability to discriminate between the CS and similar stimuli and respond only to the CS with a CR.
Opposite of stimulus generalization.
Experimental Neurosis
an abnormal behavioral condition produced in an artificial laboratory setting.
EXAMPLE: in one experiment a dog learned to salivate in the presence of a circle, which had been paired with food, but not in the presence of an ellipse, which had not been paired with food.
Higher-order conditioning
Occurs when a previously established CS serves as a US to establish a conditioned response for a new conditioned (neutral) stimulus.
i.e.-the new CS is paired with the established CS so that, eventually, the new neutral stimulus produces a conditioned response.