wk4_L_7&8. Learning: Contiguity & Contingency of events (Classical Conditioning / Opponent Process Model Flashcards
What is Classical Conditioning about?
Predicting future events
CS (Conditioned Stimulus);
- prepares one for imminent event
- sets up expectation for that event & elicits CR (Conditioned Response)
For a CS to elicit a CR, it must?
- not just a matter of close proximity
- CS must predict imminent arrival of US (Unconditioned Stimulus)
- cognitive element to Classical Conditioning
Classical Conditioning only occurs when?
The animal has learned to set up expectation
Conditioning is easier when the CS is familiar OR unfamiliar?
Unfamiliar (no pre-existing expectations)
Example of cognitive elements in Classical Conditioning (when animal has learned to set up an expectation)
CS (bell) > Expectation (of food) > Salivation/tail wagging/looking for food/begging
Contiguity Theory is when?
2 stimuli are presented together in time & associations between them are formed
How does the CR form?
Contiguity Theory - two stimuli presented together in time
To form a CR, just put two stimuli together in time
What was the proposed alternative theory of Classical Conditioning to Contiguity Theory?
Contingency Theory
Contingency Theory is?
- Contingency theory - CR develops when CS is able to predict occurrence of US
- Contingency between CS & US. Contingency being the relationship between 2 events, one being contingent/a consequence of the other.
- The occurrence of a future event is possible, given that one event has occurred, but not always certain. E.G. US may not always follow a CS - but CS can still elicit a CR
- Relies heavily on predictability & expectation
- When CS is presented, expectancy for US is formed, which fuels the CR
Contingency (predictability) depends on?
- Reliability of CS-US pairing. How often is CS followed by US?
- Uniqueness of CS-US pairing. How often US happens without CS? What is probability of US occurring if no CS has occurred?
With Contingency theory, the CS must?
Be able to predict the US
What happens to contingency theory when CS is less than perfect predictor? What if 50% of the time it follows, but 50% of the time it doesn’t?
There would be no CR
Contingency can also predict the ‘what’ of the US?
Absence
Contingency is about probability. E________ Conditioning & I_________ Conditioning - likelihood of something occurring or not occurring…
- Excitatory Conditioning - likelihood of something (food) occurring given that something else (bell) did
- Inhibitory Conditioning - likelihood of something (food) NOT occurring given that something else (bell) did
Effect of contingency on classical conditioning - also works in predicting absence of events…
What if shock is less likely when bell is sounded - then it would become a safety signal indicating lower prediction of shock
Why didn’t the villagers come when the ‘Boy Cried Wolf?’
They didn’t believe him. The CS (wolf) did not predict the US (the wolf).
The boy crying wolf might even predict no wolf - inhibitory effect