Learning theory Flashcards
Non-associative learning
- only seen in lower animals
- simple learning
- single events are used in learning patterns
Habituation
- example of non-associative learning
- repeated stimulation leads to a reduction in response over time and the organism ‘learns’ the stimulus
- response rate overall decreases
Sensitization
- increase in response to a stimulus as a result of repeated presentations of that stimulus
- overall response rate increases
- non-associative learning
Pseudoconditioning (cross-sensitization)
- the emergence of a response to a previously neutral stimulas simply as a result of exposures to a different but powerful stimulus
- non-associative learning
3 types of non-associative learning
- habituation
- sensitization
- pseudoconditioning
Associative learning
- learning that occurs through the association of 2 events
Classical conditioning
- type of associative learning
- repeated association between 2 events
- the learning organism is passive and is respondent but not instrumental (does not actively operate on its environment)
Operant conditioning
- type of associative learning
- learning results as a consequence of one’s actions -‘operations’
- the learning organism actively operates on the environment
Social learning theory
- type of associative learning
- combines both classic and operant models of learning and includes cognitive processes and social interaction to be relevant in human learning
3 types of associative learning
- classical conditioning
- operant conditioning
- social learning theory
Classical conditioning procedure
- produced by repeatedly pairing a neutral conditioned stimulus (CS) e.g bell and an unconditioned stimuls (UCS) e.g food
- this naturally evokes an unconditioned response (UCR) e.g salivation
- eventually the neutral stimulus alone evokes the desired response
Pavlov’s dogs
-example of classical conditioning
Acquisition
- development of the association between he conditioned response and the unconditioned response resulting in the conditioned response
- needs an average of 3-15 pairings
- if significant emotional involvement is present then acquisition can occur with 1 pairing
Delayed or forward conditioning
- the CS (bell) presented before the UCS (food)
- the CS and UCS pairing continues until the UCR (salivation) occurs
Backward conditioning
- UCS (food) presented before the CS (bell)
- not useful in animals
- used in advertising
Simultaneous conditioning
- UCS and CS are presented together
- often the case in real life
Trace conditioning
- CS is presented and removed before the UCS is presented
- conditioning depends on the memory trace
- delay of 0.5ms is proposed to be optimum for trace conditioning
Temporal contiguity
- time between stimulus and response
- Pavlov
- Rescorla showed that predictability is more important than temporal contiguity in humans
Higher order conditioning
- refers to the use of an already conditioned stimulus (CS) as UCS) for the next level of conditioning and eliciting a CR for another stimulus (CS2)
- 2nd order conditioning and higher are possible but animals do not respond higher than 4th order
Higher order conditioning example
- sound of box rattling illicits salivation in Sabs
- door opening ==> box rattle==> salivation
- door opening==> salivation
Little Albert
- Watson and Raynor
- produced a phobia in little Albert by exposing him to a loud noise in the presence of a white rat
- became phobic of the white rat and when white furry objects seen
- showed spread of associative learning from one stimulus to another
Stimulus generalisation
-spread of associative learning from one stimulus to another
Discrimination
- learned responses are made only to specific stimuli and not to other similar stimuli e.g spiders but not insects
Extinction
- reduction/disappearance of the learned response when the UCS-CS pairing is not available anymore
- faster extinction may mean weaker learning
- extinction does not mean loss of learning, only suppression of the behaviour response
Counter conditioning
-a form of classical conditioning where a previously conditioned response is replaced by a new response that may be more desirable e.g therapy
Spontaneous recovery
-refers to regaining a previously extinguished learned response after a period of time
Latent inhibition
-a delay in learning the association between UCS and CS is seen if previous exposure to an isolated presentation of CS is present
The law of effect
- an organism learns an appropriate behaviour after many trials because the right behaviour is followed by an appropriate desirable consequence
- demonstrated using trial and error learning experimentation originally described by Thorndike
Reinforcement
-a conditioning that leads to an increase in the frequency of behaviour following learning
Punishment
-a conditioning that leads to decrease in the frequency of behaviour following learning
Reinforcers
- positive- food
- negative- electric shock
Punishments
- positive- points on a license for driving (given the points)
- negative- a monetary fine from parking ticket (money is taken away)
Primary reinforcer
-stimulus affecting biological needs
Secondary reinforcer
- stimulus reinforcing behaviour associated with primary reinforcers
Continuous reinforcement schedule
-reinforcement every time the positive response occurs
Partial reinforcement schedules
- only some of the positive responses result in positive reinforcement
- the reinforcement is determined by the number or responses (ratio) or time (interval)
- more resistant to extinction than continuous schedules but take longer to learn
Fixed interval reinforcement
- reward occurs after a specific period of time regardless of the responses
Variable interval reinforcement
- reward occurs after a variable amount of time regardless of the number of responses
Fixed ratio reinforcement
-reward occurs after a specific number of responses
Variable ratio reinforcement
- reward occurs after a random number of responses e.g slot machines
- most resistant to extinction
Fixed schedules
- pause in response is seen after reinforcement
Variable schedules
- constant rate of response
- chance of reward stays the same
Most resistant ratio to extinction
-variable ratio
Contingency
-learning the probability of an event
Premack’s principle
- Grandma’s rule
- high frequency behaviours can be used to reinforce ow frequency behaviours
- if you eat your greens you can have dessert
Avoidance learning
- type of operant conditioning
- organism learns to avoid certain responses or situations
- very hard to extinguish
- escape conditioning is a special type- seen in phobia
Aversive conditioning
- operant conditioning
- punishment is used to reduce the frequency of target behaviour
- e.g using disulfriam to stop ETOH abuse
Covert reinforcement
- reinforcement is an imagined pleasant event rather than a material pleasure
- e.g graduation
Covert sensitization
- reinforcer is the imagined image of unpleasant consequences to reduce desired behaviour
- e.g failing exam
Flooding
- operant conditioning
- exposed to feared stimulus for a substantial amount of time until anxiety reduces
Shaping
- aka successive approximation
- operant conditioning
- behaviour is learnt by successive reinforcement of behaviours closer to the desired one
- target behaviour is yet to appear
Chaining
- linking stages of a process together to create an entire behaviour
- can go forward or backward
Incubation
- emotional response increases in strength if brief but repeated exposure of the stimulus is present
- powerful in anxiety and PTSD
stimulus preparedness
- Seligman
- stimuli that have always been threatening to people are more hardwired into our system and so phobia develops more quickly
Learned helplessness
- Seligman
- when faced with aversive stimuli from which escape is impossible, the animal stops making attempts to escape
Reciprocal inhibition
- Wolpe
- stimulus with desired response and stimulus with undesired response are presented repeatedly so that the incompatibility leads to a reduction in the frequency of the behaviour
Cueing
- aka prompting
- specific cues can be used to ellicit specific behaviours
- unlearning cues==> fading
Bandura’s social learning theory
- people can learn from observing the behaviour of others and outcomes
- key thing is the cognition of the learning= awareness and expectations
Steps of cognitive processing during learning
- attention to the observed behaviour
- visual image and semantic encoding of the observed behaviour
- memory permanence via retention and rehearsal
- motor copying of the behaviour
- motivation of act
Reciprocal causation
- Bandura
- behaviour can influence the environment and the individual and vice versa
- Bobo doll experiment
Cognitive learning
- Tolman
- learning can occur without reinforcement to the learnt response
- latent learning occurs
- rats can make mental maps of mazes and not get lost
Insight learning
- Kohler
- sudden idea occurs and solution is learnt
- no reinforcement required
Hierachy of learning
- Gagne
- 8 steps required for later complex learning
1. classic conditioning
2. operant conditioning
3. chaining
4. verbal association
5. discrimination learning
6. concept learning
7. rule learning
8. problem solving