PSYC 001 Chapter 6: Learning Flashcards
What is learning?
relatively enduring change in behavior, resulting from experience. Learning occurs when an animal benefits from experience so that its behavior is better adapted to the environment.
What is nonassociative learning?
Responding after repeated exposure to a single stimulus, or event.
repeated exposure to a single stimulus or event. I.e. getting used to the sounds of trains. Response to something in the environment and change in response to stimulus
What is associative learning?
understanding how events or stimuli are related - linking 2 events that in general takes place right after one another. Associations develop through conditioning
What is conditioning?
process in which environmental stimuli and behavioural responses become connected
What is observational learning?
Learning by watching how others behave.
What is habituation?
When our behavioral response to a stimulus decreases.
If something is
neither rewarding nor harmful, habituation leads us to ignore it. You can still perceive the stimulus.
What is sensitization?
When our behavioral response to a stimulus increases.
What is dishabituation?
Increase in response because of a change in something familiar.
e.g. This process is important in the animal world. For instance, birds might stop singing when they detect a predator, such as a hawk.
What activity at the synapse leads to non-associative learning for habituation?
Reduction in neurotransmitter release.
What activity at the synapse leads to non-associative learning for sensitization?
Increase in release of neurotransmitters.
What is classical conditioning?
When we learn that a stimulus predicts another stimulus.
neural stimulus elicits a response because it has become associated with a stimulus that already produces that response. Learn that one event predicts another
What is operant conditioning?
When we learn that a behavior leads to a certain outcome.
What is a conditioned trail
the pairing of the two stimuli then come test trials.
What are the four key types of responses & stimuli (two of each)
Unconditioned response
Unconditioned stimulus
Conditioned response
Conditioned stimulus
What is acquisition?
the formation of an association between a CS and US
What is contiguity?
critical element of acquisition is stimuli occurring together in time.
Strongest connection formed when a brief delay with CS first then US. ie scary music is a predictor of terror.
What is second-order conditioning?
sometimes a conditioned stimulus does not become directly associated with an unconditioned stimulus. Instead, the conditioned stimulus becomes associated with other conditioned stimuli that are already associated with the unconditioned stimulus. (e.g. value of money)
What is stimulus generalization?
occurs when stimuli similar but not identical to the CS produce the CR.
What is stimulus discrimination?
animals learn to differentiate between 2 stimuli if one is consistently associated with the US and the other is not. Ie poisonous plants
What is extinction?
the CR response is extinguished when the CR no longer predicts the US. Gradual reduction and eventual elimination of the CR.
What is spontaneous recovery?
the extinguished CS again produces CR, fades quickly unless CS again associated with US. even a single pairing will do.
Extinction Replaces but does not eliminate associative bond
What is a conditioned taste aversion?
Certain pairings more likely to be associated than others. Ie food and sickness. Association occurs even though food and sickness not contiguous - easy to produce with food not so with light and sound.
What is biological preparedness?
The psychologist Martin Seligman (1970) has argued that animals are genetically programmed to fear specific objects. Ie monkeys can be trained to fear snakes but not flowers. People more easily associate aversive stimuli with out group members - predisposed to wariness of outgroup members.
What is the Rescorla-Wagner model?
states that an animal learns an expectation that some predictors (potential CS’s) are better than others. Learning is determined by extent to which US is unexpected or surprising.
What is a prediction error?
A difference between the expected and actual outcomes.
What is a positive prediction error?
strengthens association between CS and US as something better than expected occured.
What is a negative prediction error?
weakens CS-US association as expected good thing didn’t happen.
What is the role of dopamine?
thirsty monkeys conditioned with a light produced dopamine in response to light but not juice - they learned light predicted juice and juice was no longer a surprise - less prediction error =less dopamine.