Psych M.D.- Extinction


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Term: Extinction
Definition (Myers): The diminishing of a conditioned response; occurs in classical conditioning when an unconditioned stimulus (UCS) does not follow a conditioned stimulus (CS); occurs in operant conditioning when a response is no longer reinforced.
Definition (alternative): in psychology, the disappearance of a conditioned response as a result of nonreinforcement; also, the process by which the disappearance is accomplished. The Free Dictionary
Contextual explanation: After conditioning, if the Conditional Stimulus (CS) occurs repeatedly without the Unconditioned Stimulus (UCS), would the Conditional Stimulus elicit the Conditioned Response (CR) continuously? Pavlov discovered that when he sounded the tone repeatedly without presenting food, the dogs salivated less and less. This declining of salivation shows: extinction, 'the diminished responding that occurs when the CS (tone) no longer signals an impending UCS, food in this case (Myers, Psychology).




Related terms and concepts:Classical Conditioning, Operant Conditioning,Unconditioned Response,Spontaneous Recovery,Learning,Classical Conditioning and Pavlov's Experiments,Updating Pavlov's Understanding



from 2:45, the video specifically talks about extinction



Psych M.D.- Extinction - The Neuron

Source of picture: http://facstaff.gpc.edu/~mgriffin/PSYC1101Online/Learning/classconpavdogs.htm
Related websites:

Prenticehall.ca - Pavlov's Dilemma and Discovery: Classical Conditioning
Itc.umanitoba.ca - Classical Conditioning
BNET - Extinction
Edited by: Rachel



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