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Classical Conditioning.docx

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Joe Kim

Classical Conditioning Learning -Classical conditioning allows us to relate associate 2 related events -Instrumental conditioning allows us to associate actions and consequences Classical Conditioning Ivan Pavlov (1800) -pavlovian conditioning -digestion→salavation -dogs salivate before food is seen -sound of metronome signalled food was there, before no response, soon dogs salivate at sound of metronome -conditional reflex -contingent relationship: presentation of one stimulus leads to presentation of another stimulus Ex lighting and thunder -signal=event -association b/t signal and event, contingency formed -Classical conditioning: the learning of a contingency b/t signal and later event that are paired in time &/or space -makes sense to avoid this, learn to avoid Terminology The Unconditioned Stimulus (US) -any stimulus/event -occurs naturally, prior to learning -automatic -Ex. slice of lemon triggers w/o training The Unconditional Response (UR) -response that occurs after any US -occurs naturally, prior to learning -no training required -biological reflex Ex. US food=UR salivation The Conditional Stimulus (CS) -paired w/ US to produce contingency -previously neutral -after association w/ US=b/c trigger response on own Ex. metronome w/ dogs -appears b/f US takes time b/f CS alone has response -when this occurs organism has learned contingent relationship b/t 2 stimuli The Conditional Response (CR) -the response produced once contingency b/t CS & US learned -like UR often Ex. CR is salivation w/ metronome Acquisition -process by which contingency b/t CS & US is learned -Pavlov: following -ve accelerating curve -takes many trials, happens during earlier trials -sometimes one trial works Ex. Rats avoid unfamiliar foods (neophobia) -consume in small qualities to pinpoint which foods bad so they never eat it again -learned contingency b/t food & sickness Extinction -i
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