Learning and Cognition Flashcards
(69 cards)
Learning definition
Set of biological, cognitive and social processes through which organisms make meaning from their experiences, producing long lasting changes in their behavior, abilities and knowledge.
- Learning helps us predict future events.
Non-Associative learning definition: (Sensitisation and habituation)
“Hard wired” learning, occurs with all species
-Sensitisation:Temporary state of heightened attention after sudden and suprising stimuli
-Habituation: The gradual diminishing and of attention and responsitivity as the stimuli continues to occur
Stimuli definition:
Agents, events or sittuations that elicit a response within an organism
Associative learning definition
Also known as conditional learning:
-Learning associations between stimuli and behavioral responses
- Where associations between stimuli are learnt to preemptively predict biological events and learn adaptive responses to such predictive stimuli.
what is biologically significant stimuli?
-Stimuli that naturally causes a defensive (flight, fight, freeze) response.
-Stimuli that is naturally punishing or rewarding.
What is unconditioned stimuli (US)?
A form of biologically significant stimuli, it is unlearnt and inherently causes a reflect response, defence or approach (i.e a loud bang, or a shock)
What is classical conditioning?
Learning a predictive relationship between an originally neutral environmental event and a biologically significant event that itself naturally causes an automatic reflex response, so that the previous unmeaningful neutral stimulus becomes a meaningful stimulus producing an automatic reflex response on its own.
Use formal language and abbreviations to describe the process of classical conditioning:
Classical conditioning is the process of learning an involuntary association between a neutral stimulus (NS) and an unconditioned stimulus(stimulus) so that the neutral stimulus (NS) becomes a conditioned reflex response even in the absence of the unconditioned stimulus (US)
What do NS, UCS, UCR, CS, CR mean?
NS: Neutral stimulus
UCS: Uncontrolled stimulus, Natural causation
UCR: Uncontrolled response, Natural response
CS: Conditioned stimuli
CR: Conditioned response
note that UCS+UCR=response
Give example of Classical conditioning
Neutral stimulus: Video
Uncontrolled stimulus: Electric shock
Uncontrolled response: Jumping from electric shock
If the uncontrolled stimulus is paired with the neutral stimulus, it will cause the previous neutral stimulus to become conditioned stimuli, initiating a conditioned response.
Conditioned stimuli: Video
Conditioned response: Jumping when watching a video
What is stimulus generalisation?
The idea that a conditioned response can be transferred to similar stimuli, as demonstrated by pavolv.
What is stimulus discrimination?
When a conditioned response only occurs with a specific stimulus.
What is spontaneous recovery?
When a classical conditioned response comes back after extinction.Not intentional
What is rapid extinction?
Purposefully teaching association again after sustained extinction (reintroducing the stimulis)
3 phases of classical conditioning
1.Before learning
-Neutral stimulus is present not yet associated with rewarding or punishing behaviour
-An innate reflex response occurs that is naturally occuring to the individual in light of a punishing or rewarding stimuli
2.Learning associations (during learning)
-Experiencing a predictive relationship between the neutral stimulus and the uncontrolled stimulus (biologically relevant stimulus)
3.After conditioning
-Previous neutral stimulus becomes a conditioned stimulus, and is able to produce a learned reflex response in preparation and expectation of the biologically relevant stimulus.
What is operant conditioning?
Behaviour shaped by a learners history of experiencing rewards or punishment for their behaviour.
What was the skinner box
The skinner box was a way to examine operant conditioning
-Skinner developed the ‘skinner box’ as a microworld of which he could control the animals experience of reinforcement and punishment
-Pressing the lever was the target behaviour which could be both strengthened through reinforcement or weakened through punishment.
What is the reinforcement process?
-Behaviour is reinforced (strengthened) whenever a desirable outcome is the consequence.
-behaviours reinforced are more likely to be repeated.
-Reinforcer is any consequence of behaviour that makes the behaviour more likely to reoccur in the future.
-Reinforcements can either be positive or negative
What is positive and negative reinforcement?
Positive reinforcement: An animal will learn to reproduce a behavior if the consequence is something pleasant.
Negative reinforcement:An animal will learn to reproduce a behaviour if the consequence is that something unpleasant will stop.
What is a positive and negative reinforcer?
Positive reinforcer:
something pleasant added to increase behavior
Negative reinforcer:
Something unpleasant stopped to increase behaviour.
What is continuous reinforcement?
Continuous reinforcement occurs when
-Every instance of behaviour is reinforced
-Rarely occurs in an natural environment
-Leads to rapid extinction once the reinforcer is withheld.
What is partial reinforcement?
-Behaviour is reinforced on a “partial schedule”
-Leads to more persistant learning as the learner becomes more accustomed to reinforement occuring on some occasions and not others.
-Examples would include pokie machines.
How does the extinction of reinforced behaviour occur?
-Extinction of a seperatly conditioned behaviour occurs when reinforcement is withheld.
-Extinction is not immediate.Sometimes their is a brief period of responding known as a “extinction burst” which is then followed by a decrease in trained behaviour.
-Responses that are reinforced partially are harder to extinguish than those reinforced continously.
How are complex behaviours shaped?
-Shaping reinforces successive approximations to the desired behavior.
How it occurs:
-Start by reinforcing a large amount of the desired response
-then drop the reinforcment, behavior will then become more variable again.
-Await a response closer to the desired response and then reintroduce the reinforcer
-keep repeating this process as the individual gets closer and closer to the desire behaviour.
-This enables a modelling process.