Lecture 6: Learning Flashcards
What are the three main statements of behaviourists?
1) The study of the mind is outside the remit of science.
2) Introspection about mental processes is hard to verify.
3) The only thing we can reliably measure is behaviour.
What are the two types of conditioning that explain how new behaviour is formed?
1) Classical conditioning
2) Operant conditioning
What is classical conditioning?
- Watson (1913)
- We are born with nothing onto which the environmentetches its stimulus-response relationship associations.
- Fear is just a behaviour predisposition to cry, love a predisposition to kiss, hate a predisposition to attack.
What is operant conditioning?
- Skinner (1938)
- Stimulus-response relationships can be strengthened or weakened by the addition and removal of positive and negative outcomes.
- Reward and punishment can form new behaviours (consequences).
- This concept takes away the concept of humans having free will.
- Behaviour depends on consequences of responses.
What was Ivan Pavlov’s field of interest?
- (1849-1936)
- digestion
- initially considered the foundation of behaviourism to just be an annoyance.
How do unconditioned stimuli (UCS) and responses (UCR) interact?
-We already have a number of unconditioned associations with our environment.
-e.g. Dog presented with food:
Prior to training, the presentation of food stimuli will lead to salivary responses.
How do conditioned stimuli (CS) and responses (CR) interact?
- There are other stimuli that surround the UCS that, with training, can be conditioned with the same response.
- e.g. Dog associates the footsteps of researcher/noise of bowl being placed on floor with food and so has the same salivary response.
What type of reflex is being initially startled?
Unconditioned Reflex
What type of reflex is learnt through association?
Conditioned Reflex
What does the study of Albert show about the application of classical conditioning?
- Loud gong noise startled Albert, bringing about fear.
- Gong noise was then associated to furry animal, establishing a US-CS link.
- Albert then had the same fearful reaction to furry animals through this association (fear behaviour is the unconditioned response and conditioned response).
What did the study of Albert show about the limits to classical conditioning?
- It showed stimulus discrimination.
- e.g. The fear associated with furry objects did not extend to cotton balls.
What are four aspects of classical conditioning to consider?
1) Acquisition
2) Extinction
3) Spontaneous Recovery
4) Stimulus Generalisation
What is Acquisition?
- US-CS associations are not always natural and so take time to develop.
- The close temporal proximity of the US-CS strengthens the acquisition of the bond.
- Temporal proximity: close=more likely association.
What is Extinction?
- If the CS stops predicting the US then the association (and hence the CR) will be extinguished.
- However, the association is replaced rather than forgotten.
What is Spontaneous Recovery?
- If the CS-US relationship starts up again, then the CR can return.
- in a weaker form.
What is Stimulus Generalisation?
- Maybe the exact CS is missing but a similar kind of CS might elicit the same CR.
- The organism has generalised.
What is the basic idea of the Rescorla-Wagner (1972) model?
-learning occurs between the UCS and CS when the CS predicts the UCS.
What is backwards conditioning?
If the conditioned stimulus appears after the unconditioned stimulus then learning will not occur.
What is blocking?
A second conditioned stimulus does not add anything to a prior conditioned-unconditioned relationship.