Classical conditioning Flashcards
What is learning
‘a relatively permanent change in behaviour or
behaviour potential which occurs as a result of prior
experience’ (Hilgard & Bower, 1975).
must be inferred from changes in behaviour.
Does behaviour change always indicate learning?
no
Other influences on our behaviour temporary states
◼ illness/disease ◼ motivation ◼ development/maturation ◼ innate/instinctive factors ◼ culture/environment
Nature vs nurture
Is behaviour inherited or learnt??
◼ ‘born that way’ or
◼ ‘taught’ to behave that way?
◼ usually a combination of nature and nurture.
habituation
◼ decline in the tendency to respond to stimuli that
have become familiar due to repeated exposure
(e.g., tick of a clock).
adaptation
‘fitting in’ with the environment
(e.g., shivering in cold conditions,
increasing pupil size in reduced light).
Association
part of classical conditioning
association between one object or event and
another object or event.
◼ formation of associations between two stimuli
that are normally unrelated.
First phase
unconditioned stimulus: (naturally caused UCR) Meat for dog
unconditioned response: salivation
Innate (natural) process
Second phase
introduction of the neutral stimulus (e.g bell)
NS + UCS = UCR
Bell then becomes a conditioned stimulus (CS) that produces a (CR)
This is the LEARNED PROCESS
stimulus contiguity
acquisition of a conditioned response
depends upon the degree to which stimuli
are paired in time
stimulus generalisation
◼ process in which CR can be triggered by a
stimulus that has never been conditioned but
resembles the conditioned stimulus.
Stimulus discrimination
CR is learnt only to a specific
conditioned stimulus
◼ a response is not evoked by new stimuli
that are similar to the original stimulus.
◼ Effects of generalisation have to be
extinguished to facilitate stimulus discrimination.
Spontaneous recovery
reappearance of a previously extinguished CR after
a period of non-exposure to the CS.
◼ after CR of salivation to sound of bell had been
extinguished, the dogs received a rest period.
◼ during further trials in which the bell was sounded
again, the previously learnt CR (salivation) returned.
Stimulis generalisation
other stimuli may trigger nausea
and vomiting even when not undergoing
treatment
Conditioned taste aversion
stomach upset or food poisoning may lead to
strong aversion to certain food
◼ sight, aroma, even name of dish may become
trigger (CS) of disgust or nausea.
◼ delay between pairing of CS and UCS
(e.g., 8-12 hours).
◼ single pairing of stimuli only