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Lecture 11

PSY100H1 Lecture Notes - Lecture 11: Little Albert Experiment, Classical Conditioning, Habituation


Department
Psychology
Course Code
PSY100H1
Professor
Ashley Waggoner Denton
Lecture
11

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PSY100H1S: Intro to Psych
Fri Feb 15 2019
learning: relatively prominent change in behaviour or knowledge, resulting from
experience
Little Albert
John Watson
classically conditioned a baby to be afraid of animals by having him play with
a rat and banging a gong near him
3 types:
associative
nonassociative
habituation
sensitization
observational (social)
classical (Pavlovian) conditioning: occurs when 2 different stimuli come to be
associated with one another, no action required on part of learner
operant (instrumental) conditioning: animal of person operates on environment to
produce particular results
classical conditioning: neutral stimulus comes to elicit a reflexive response, becomes
associated with a stimulus that already produces that response
unconditioned stimulus (UCS), unconditioned response (UCR), conditioned
stimulus (CS), conditioned response (CR)
e.g. Pavlovs dogs
UCS (food) = UCR (salivation)
neutral stimulus: tone
neutral stimulus + UCS = UCR
CS (tone) = CR (salivation)
acquisition: gradual formation of an association between conditioned and
unconditioned stimulus
CS-UCS pairings lead to increased learning such that the CS can
produce the UCS
extinction: a process in which the conditioned response is weakened when
the conditioned stimulus is repeatedly presented without the unconditioned
stimulus
if CS presented without UCS, CR eventually extinguishes
spontaneous recovery: process in which a previously extinguished response
re-emerges following presentation of the conditioned stimulus
if CS presented alone, produce weak CR
gets weaker is CS continually presented alone, eventually
extinguished
stimulus generalization: stimuli that is similar but not identical to
conditioned stimulus produces CR
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