Learning and Cognition Flashcards

(69 cards)

1
Q

Learning definition

A

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.

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2
Q

Non-Associative learning definition: (Sensitisation and habituation)

A

“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

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3
Q

Stimuli definition:

A

Agents, events or sittuations that elicit a response within an organism

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4
Q

Associative learning definition

A

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.

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5
Q

what is biologically significant stimuli?

A

-Stimuli that naturally causes a defensive (flight, fight, freeze) response.
-Stimuli that is naturally punishing or rewarding.

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6
Q

What is unconditioned stimuli (US)?

A

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)

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7
Q

What is classical conditioning?

A

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.

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8
Q

Use formal language and abbreviations to describe the process of classical conditioning:

A

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)

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9
Q

What do NS, UCS, UCR, CS, CR mean?

A

NS: Neutral stimulus
UCS: Uncontrolled stimulus, Natural causation
UCR: Uncontrolled response, Natural response
CS: Conditioned stimuli
CR: Conditioned response

note that UCS+UCR=response

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10
Q

Give example of Classical conditioning

A

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

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11
Q

What is stimulus generalisation?

A

The idea that a conditioned response can be transferred to similar stimuli, as demonstrated by pavolv.

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12
Q

What is stimulus discrimination?

A

When a conditioned response only occurs with a specific stimulus.

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13
Q

What is spontaneous recovery?

A

When a classical conditioned response comes back after extinction.Not intentional

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14
Q

What is rapid extinction?

A

Purposefully teaching association again after sustained extinction (reintroducing the stimulis)

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15
Q

3 phases of classical conditioning

A

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.

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16
Q

What is operant conditioning?

A

Behaviour shaped by a learners history of experiencing rewards or punishment for their behaviour.

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17
Q

What was the skinner box

A

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.

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18
Q

What is the reinforcement process?

A

-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

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19
Q

What is positive and negative reinforcement?

A

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.

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20
Q

What is a positive and negative reinforcer?

A

Positive reinforcer:
something pleasant added to increase behavior

Negative reinforcer:
Something unpleasant stopped to increase behaviour.

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21
Q

What is continuous reinforcement?

A

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.

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22
Q

What is partial reinforcement?

A

-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.

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23
Q

How does the extinction of reinforced behaviour occur?

A

-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.

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24
Q

How are complex behaviours shaped?

A

-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.

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25
What is punishment?
-Punishment occurs when behavior is punished (weakened) when the learner experiences an undesirable consequence for their behavior. -Behaviours followed with punishment, are unlikely to be repeated, opposite of reinforcment.
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What is a punisher?
A punisher is any consequence of behaviour that makes the behaviour less likely to occur in the future -punishers can either be positive or negative.
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What is positive punishment? and a positive punisher?
-Animals will stop producing a behaviour if the consequence is a presentation of an unpleasant stimulus Positive punisher:Any unpleasant stimulus that weakens behaviour when added as a negative consequence of the behaviour.
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What is negative punishment? what is a negative punisher?
-A behaviour will stop being produced if the consequence is that something desirable will get taken away. Negative punisher: Any pleasant stimulus that weakens behaviour when taken away.
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When is punishment affective? the 3 C's
Contingency: Relationship between the behavior and the punisher must be clear. Contiguity: Punisher must follow behavior swiftly. Consistency: The punishment needs to occur for every occurrence of the behavior.
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Disadvantages/Drawbacks of punishment
-Positive punishment rarely works for longterm behaviour change, it tends to only supress behaviour. -It does not teach a more desireable behaviour, only indicates which behaviours are undesirable. -Produces negative feelings within the learner which do not promote new learning. -Harsh punishments may teach the learner to impose the same harsh punishments on others, known as social learning. -If the threat of punishment is removed, the behaviour will return.
31
What are alternatives to punishment?
-Stop reinforcing the problematic behavior, in other words undergo the extinction process. -Reinforce alternative behavior that is both constructive and incompatible with the problematic behavior.
32
What are antecedents and what is their role in the relationship between classical and operant conditioning?
Antecedents are a form of conditioned stimulus, they are cues that signal the behaviour of a reinforcer.Antecendent stimuli drive habitual behaviours. They can be; -Stimuli in the environment that can become antecedents for operantly conditioned behaviour. -Or classically conditioned associations can become antecedents forcues (antecedents) for operant behaviour. -An individual can structure their environment with antecedent behaviour to "cue" positive behaviour.
33
What is the 'ABC' operant behaviour model?
Involves: Antecedent--->Behavior--->Consequence.
34
What is a discriminant stimuli?
Antecedent becomes discriminant stimuli when it signals which of 2 or more behaviours will be rewarded in a specific context. -i.e in training animals different hand signals/verbal commands signal which behaviour to reward.
35
What is a cognitive map?
A cognitive map is a mental representation of the spatial characteristics of a familiar environment. -Proven by Tolman's experiment which showed rats create "spatial maps" of their environment. Rather than a series of chained responses to external cues."observations suggest that rats really develop wider spatial maps which include more than the mere trained paths".
36
What is latent learning?
Learning can occur in the absence of both reward and punishment.As demonstrated with Tolman he challenged traditional behaviourist accounts of learning and uncovered this "hidden" type of learning. -Tolmans experiment demonstrated that rewards affected whether the learned behaviour will be demonstrated, not whether the learning has actually occurred. Group c of rats which was rewarded afterwards, displayed learning however not until the reward was given. -This suggests that these rats were learning prior to reinforcement through forming their own cognitive maps, allowing them to demonstrate their learning once rewarded.
37
What is the social-cognitive learning theory?
Bundura suggested observational learning was occurs through providing an example of how learning can occur indirectly without direct reinforcement or punishment. Observational learning takes place through active judgements and constructiveness processes that involves cognitive processes of mental representation. This therefore means that learning can occur vicariously and socially through observing other people known as "models". -Modelling consequences involve positive and negative reinforcement.
38
What is the process of vicarious reinforcement and punishment?
Positive reinforcement:If an individual observers a "model" they will symbolically reinstate the modelled agressive response and engage in considerable positive social reinforcement. Banduras study indicates that the peformance of agressive acts is influenced by mental representations of observed consequences. Positive punishment:Vicarious punishment occurs when individuals avoid certain behaviours after observing others being punished for those behaviours.Banduras study found that knowledge remained latent in the model-punished group until a reward was introduced.
39
What is memory?
-Memory is a set of storage systems and processes for encoding, storing and retrieving information acquired through our senses, relating information to previous acquired knowledge and experience. -Memory can also be thought to be a mental representation of knowledge within memory systems stored within neural networks of the brain.
40
What is the multi-store model of memory?
-Proposed by Atkinson and Shiffron during the early days of cognitive revolution. -proposed that memory exsists in 3 "stores", "Stores" refering to 'think systems' -These included; sensory memory, short term memory, long term memory. -the 3 stores were distinguished by how duration and capacity of memory.
41
what are the 3 processes of memory?
-Encoding -Storage -Retrieval
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What does the encoding process of memory involve?
-involves acquiring information from experiences and mental processes. -Involves registration of information in the sensory regions of brain (elements of experience and the interpretation and integration of experience with prior knowledge).
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What does the storage process of memory involve?
-During the storage stage, encoded representations are re-consilidated into memory traces and stored into neurons throughout the brain. -With different types of memories stored within different neuron networks. -the storage capacity and duration differ between memory systems.
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What are examples of the storage process within memory?
-How neurons within the visual cortex store information about sights that are part of an experience or... -How neurons in amygdala store information about the emotions we experience.
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What occurs in the retrieval process of memory?
-Retrieval is the "remembering", "knowing" and "doing" -Retrevial is an reconstructive and error prone process that aims to reconsolidate learning after retrieval has occured. It is also highly contextual, it relies on the right cues being present in order for the information to be accurately detained. -Examples include; personal reminisce of experience, recalling facts, executing refined motor skills and continued response. -the retrieval process involves both implict and explicit retrival processes.
46
What is the sensory memory system and what is its role?
-Sensory memory system is a temporary, sensory based representation of input received through sensory channels. -Sensory memory creates a "buffer" which can be thought of us a waiting area between early sensory processes and later cognitive processes. -few memories stored, brief duration, large capacity.Involves both audio and visual memory.
47
What did the sperling experiment do? in regards to visual sensory memory?.
-Sperling experiment used a series of experients to determine visual sensory memory duration and capacity. -Used full report vs partial report methods. -Participants were asked to remember a number of letters shown to them that they could remember from an array presented. -Participants noted that they felt as though they had "brief" visual memory of the letters, but on average could only recite 4. -Results suggested that although visual sensory memory can intially capture large amounts of information, the duration of which this memory lasted was short.
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What were some problems with sperlings experiment?
Problems included: -Attention constraints, the full report method may have overwhelmed participants. -Rapid decay may have been caused by an encoding failure instead. -Perceptual strategies such as grouping may have been used to aid recall. Which was not accounted for in the full report method. -Individual variability: differences in attention or cognitive abilities would have affected individuals abilities to attain information.
49
How did sperling adress the disadvantages of his experiment?
Decided to instead use a partial report method, used audio cues as well as visual.As he believed (visual sensory memory/iconic memory) had greater capacity than his first experiment found. -Using audio cues as well as visual prevented visual overload, allowed for faster cueing as audio cues are faster than visual,avoided spatial conflict between visual stimuli and reduced interferance by seperating cue modaility (auditory) with stimulus modality (visual).
50
What did sperlings partial report method find?
-much larger estimate of visual sensory memory capacity. -Indicates that the full-report method underestimated capacity of iconic memory by confounding reporting method with the duration of iconic trace. he ultimately found through altering partial report method, systematically varying the retention interval turning off the stimulus array and presenting the cue for the line to report: That the duration of iconic memory: reduces to 1 item after 500 milliseconds (half a second)
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What is the atkinson and shiffrin model of Short term memory (STM)?
-Temporary store in which we integrate current sensory experiences with long term memory to achieve current goals. -Short term memory is the conscious representation of "the present moment"
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What is the Duration and Capacity of short term memory?
Duration:15-30 seconds Capacity: Limited
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What is the role of maintenance rehearsal in transfer to LTM?
Model of maintenance rehearsal is a primary encoding mechanism, resulting in a transfer of information to the long-term memory: -Information in STM comes from sensory registers and retrieval from LTM -Encoding in STM relates to information from sensory stores to long-term memory.
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How to measure, the experimental findings used to estimate capacity of short-term memory.
Measuring Verbal short term memory capacity: -This is assessed using a digital span task. -It worked by calling participants to immediately recall verbally presented digits. Length of sequence is increased by 1 item after each successful attempt to determine the upper limit of span. The experimental findings: Average adult span is 7(+/-)items: Seven plus or minus 2, items of information
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How to measure, and the experimental findings used to estimate duration of short term memory?
-Known as the Brown-Peterson task -Involved recalling 3 constants, memory testing at 3-second intervals. -Used a filled retention interval to prevent rehearsal.
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How does verbal rehearsal help transfer memory to the LTM.
Ultimately, verbal rehearsal keeps information active in STM and strengthens the trace, increasing the chance it will be stored in LTM
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How does serial position effects provide evidence for separate STM and LTM stores, affecting the transfer between them?
Serial position effect refers to the immediate free recall of lists of numbers or words affected by the position of items in the studied list. * Rehearsal in STM leads to LTM transfer * Primacy reflects LTM, recency reflects STM. Ultimately it suggests that memory is effected by order in which the events occur, primary effect means that the first couple of items are easy to remember whilst recency effect means that the last of the list is more likely to remember.
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how did "levels of processing" challenge the original model of STM.
levels of processing tested the hypothesis that "deep" processing during the encoding process will produce stronger long-term memory. This challenged the original model of STM which suggested it was just a system for shallow maintenance of information. "Levels of processing" showed that "shallow" processing is less effective for long-term retention.
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What are the components of Baddeley's working memory model?
-"phonological loop" (Left hemisphere fronto-temporial lobe)which is a mental workspace for manipulating auditory and verbal information. Important for language development and verbal reasoning tasks. Involves working memory, you have to "do" something with the information, not just maintenance rehearsal. -Visuo-spatial sketchpad: (right occipital-parietal network).Temporary store for representations of visual and spatial information such as faces, objects, written words and cognitive maps. -enables mental manipulation of visually and spatially represented information such as mental rotation of objects, visual and spatial mnemonics, mental arithmetic and cognitive maps of information. the central executive: (pre-frontal cortex). Specifically dorsolateral prefrontal cortex and the anterior cingulate cortex. Used in planning and coordinating complex behavior like goal orientation, focus attention, swithcing between tasks. Episodic buffer: (paritetal cortex, the association cortex), perceptual processing, intergrating multi modal information
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What is declarative memory?
-Its explicit, involves knowing what, when and where -includes the reminisce of personally experienced events and facts, locations, and autobiographical information. -It is dependent on the hippocampus
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What is non-declarative memory?
-Its implicit, its the unciousness knowledge of how we do stuff -Includes motor skills,habits and cognitive skills like reading. -It is not dependent on hippocampus. -operant and conditional learning depend on non-declarative memory, this is why we get better at things with practice.
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How does the working memory model work include the proposed roles in cognition and neural basis.
-PS responsible for visual spatial information and VSS responsible for auditory-verbal information are independent but interacting sub systems. -PL and VSS access and update language based and visual representations of long term memory. -The central executive system then directs attention to and retrives information from PL and VSS for integretation ito episodic buffer. -Then the multi-model memory traces are formed in the episodic buffer and then stored in episodic long term memory.
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what are the sub-divisions of declarative memory and what do they mean??
-Episodic memory:The vivid first person recall of personally experienced events. it is contexualised memory allowing us to control when and where, thought of as a "Mental time travel" it allows us to recall the past and present. -Semantic memory:General knowledge, facts about the world and yourself.It is what/why knowledge and includes abstract knowledge, including abstract knowledge of ones self.
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What are the sub-divisions of non declarative memory and what do they mean?
procedural memory:Learning and performing of motor and cognition skills.It can be thought of as "priming" and is often determined by demonstrating a change in the ability to identify a stimulus as a result of prior exposure to stimulus, or a related stimulus. Associative -Classical conditioning:Learning to attend to a formally neutral stimulus because it has been associated with a meaningful status. -Operant conditioning: Learning to produce/avoid behaviour because it has been associated with a rewarding/punishing consequence. Non-associative learning -Habituation:learning to ignore stimulation because its trivial -sensitization:learning to attend to potentially threatening stimulus.
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What is amnesia? what are the 2 types
-Amnesia refers to deficits in memory caused by brain damage, disease, drug abuse, or psychological trauma. -Amnesia provides evidence for proposed divisions between declarative and no-declarative memory. -2 types are: Retrograde and anterograde amnesia
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What is retrograde amnesia?
-Inability to remember episodes before the brain injury occurred -Temporally graded. -Cant remember old declarative knowledge
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What is anterograde amnesia?
-inability to recall any declarative knowledge (explicit, conscious knowledge) after the brain injury occurs. -Cant learn and retain any new declarative knowledge.
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What was the case of HM? what did it tell us of the role of hippocampus in the consolidation of declarative memory?
-Severe anterograde amnesia HM experienced (Cant process new declarative memory) indicates hippocampus is essential in the consolidation of declarative memory. -When HM got his hippocampus removed to treat epilepsy, however after the surgery he suffered from temporally graded retrograde amnesia, as well as severe anterograde amnesia. -hippocampus is needed for long term memory establishment.
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What evidence from studies of amnesia show distinctions between declarative and non declarative forms of memory?
-Those who suffer from antereograde amnesia are still able to learn new procedural skills (non-declartive learning) for example the mirror-tracing task.This demonstrates that procedural learning can occur independently from brain systems required for declarative learning (hippocampus damage) -Studies show that individuals with antereograde amnesia show preserved non-declarative memory.such as classical and operant conditioning,habituation and priming effects indicating a distinction between declartive and non-declarative forms of memory.