Learning Theories Flashcards
Classical Conditioning
What is an unconditioned stimulus?
a stimulus that produces a response without any learning taking place.
Classical Conditioning
What is an unconditioned response?
an unlearned response to an unconditioned stimulus.
Classical Conditioning
What is a neutral stimulus?
a stimulus that does not produce the target response. It becomes a conditioned stimulus after being paired with the unconditioned stimulus.
Classical Conditioning
What is a conditioned response?
the response elicited by the conditioned stimulus. a new association has been learned so the NS produces the UCR which is now called the CR.
Classical Conditioning
What is a conditioned stimulus?
a stimulus that only produces the target response after it has been paired with the UCS.
Classical Conditioning
What is spontaneous recovery?
extinct responses can reappear without new pairings with the UCS. usually these are weaker than the original ones.
Classical Conditioning
What is stimulus generalisation?
sometimes we are conditioned to one stimulus but it can cause a response to other similar stimuli.
Classical Conditioning
What is extinction?
when the CS and UCS have not been paired for a while and the CS cease to elicit the CR.
Classical Conditioning
What is reductionism?
refers to a theory that seems to over simplify human behaviour or cognitive processes and in doing so neglects to explain the complexities of the mind.
What is Classical Conditioning?
learning by association. occurs when a neutral stimulus is repeatedly paired with an unconditioned stimulus. the neutral stimulus eventually produces the same response as the unconditioned stimulus (the unconditioned response) so becomes the conditioned stimulus which elicits a conditioned response.
What is a strength of classical conditioning?
It is supported by studies conducted on humans and animals. Pavlov demonstrated classical conditioning of salvation responses in the studies of dogs. Watson and Rayner demonstrated that a fear response could be conditioned in a human baby. This is important because it means there is firm evidence supporting the existence of classical conditioning in human and animal learning.
What is an opposing view of classical conditioning?
A weakness is that it can only explain how a limited range of behaviours can be acquired. Classical conditioning only explains the acquisition of simple reflex responses like salivation, anxiety and sexual arousal. It cannot account for more complex chains of learned behaviour. For example, classical conditioning could explain how we come to fear dogs not the maintenance of this fear overtime. Therefore classical conditioning is an incomplete explanation of learning.
What is a differing approach to classical conditioning?
Some of Pavlov’s details of classical conditioning are open to question. For example, Pavlov believed that the essential factor linking NS to UCS was contiguity, Rescorla (1968) found evidence that contiguity is less important than contingency.
What is an application of classical conditioning?
Has therapeutic applications such as systematic desensitisation and flooding. A further example of a therapy based on classical conditioning is aversion therapy. This is used, for example, to treat people who have unwanted behaviour such as experiencing sexual arousal to a photograph of a young child. A painful electric shock (UCS) is paired with the child’s photograph (NS). The shock produces an UCR of discomfort. The NS will become a CS and also produce a sensation of discomfort.
What were the aims of Pavlov’s experiment (1927)?
- to explain the role of conditioned reflexes in the eating behaviour of dogs.
- to explore how salivation becomes associated with new stimuli apparently unrelated to food and the properties of this association.
What was the procedure of Pavlov’s experiment (1927)?
1) collecting saliva from the salivary glands of an immobalised dog.
2) measured the salivation by the volume or number of drops in a cannula.
3) took place in a soundproof chamber in order to minimise the effects of extraneous variables.
4) measured salivation response to the NS (a metronome) then paired this with the UCS of food 20 times.
5) varied the presentation of the NS.
6) extinction or spontaneous recovery was investigated by presenting the NS, now a CS, without the UCS.
What were the findings of Pavlov’s experiment (1927)?
- NS did not elicit a salivation response whereas the UCS did.
- after pairings of the NS and the UCS, the NS did elicit salivation.
- no salivation was produced in response to NS after backwards pairing.
- the salivation reflex only became associated with the NS of the dog was alert and undisturbed.
- extinction can be seen as the salivary volume decreasing after repeated presentation of the CS without the UCS.
What was the conclusion of Pavlov’s experiment (1927)?
a link is made in the brain between a UCS and NS that occurs just before the UCS. Pavlov called this signalisation.
Evaluating Pavlov’s experiment:
Generalisability
a weakness.
conducted on dogs and there is an issue generalising the results of animal studies to humans.
structurally different brains- may respond differently.
humans have a larger cerebral cortex and this permits greater complex cognitive processing including conscious choice.
Evaluating Pavlov’s experiment:
Reliability
used standardised procedures.
the study was carefully documented.
the study was repeated many times over 25 years using different dogs and different neutral stimuli all producing the same results.
different researches observed the dog and measured the saliva.
Evaluating Pavlov’s experiment:
Application
clinical applications in understanding eating disorders.
obesity can be partially understood in terms of conditioned responses.
Jansen et al suggested that overweight children have acquired very strong associations between food and cues that predict the arrival of it and the salivation response.
significant in developing therapies such as systematic desensitisation.
Evaluating Pavlov’s experiment:
Validity
tested the neutral stimulus.
conducted the experiment in a sound proof lab to remove potential effects of extraneous variables.
used an external collection of the saliva for accurate measurements.
clear that the conditioning produced these results not any extraneous variables.
Evaluating Pavlov’s experiment:
Ethics
took place before BPS ethical guidelines were introduced.
for research to be conducted on animals to be considered ethical, the significant impact and benefits of the study must outweigh the harm.
what is informed consent?
the process of informing a research subject of the risks, benefits and expected outcome of the study they have agreed to take part in.
Operant Conditioning
What is shaping?
a process of modifying behaviour by reinforcing successive approximations to a desired behaviours.
Operant Conditioning
What is positive reinforcement?
occurs when something nice is introduced following a behaviour.
Operant Conditioning
What is punishment?
takes place when an event follows a behaviour and this decreases the probability that the behaviour will be repeated.
Operant Conditioning
What is a primary reinforcer?
takes place when the thing that acts as a reinforcer has biological significance such as food, shelter, sex.
What is Operant Conditioning?
learning that occurs when a behaviour is followed by an event and the nature of this event increases or decreases the probability of this behaviour being repeated.
Operant Conditioning
What is a secondary reinforcer?
takes place when the thing that acts as a reinforcer has become associated with something of biological significance e.g money which is associated with buying food.
Operant Conditioning
What is positive punishment?
occurs when something unpleasant is introduced following a behaviour.
Operant Conditioning
What is reinforcement?
it takes place when a behaviour is followed by an event which increases the probability of that behaviour being repeated.
Operant Conditioning
What is behaviour modification?
the use of operant conditioning techniques to change the frequency of desired behaviours e.g in therapeutic settings.
Operant Conditioning
What is negative punishment?
occurs when something nice is removed following a behaviour.
Operant Conditioning
What is negative reinforcement?
occurs when something unpleasant is removed following a behaviour.
Operant Conditioning?
What are schedules of reinforcement?
a plan of how often and when reinforcement will be provided.
Operant Conditioning
What is a variable ratio reinforcement schedule?
a reinforcer is given after an unpredictable number of behaviours that varies around a mean value.
Operant Conditioning
What is a fixed ratio reinforcement schedule?
a reinforcer is given after a set/specified number of behaviours.
Operant Conditioning
What is a variable interval reinforcement schedule?
the time between reinforcers varies around a mean length of time.
Operant Conditioning
What is a fixed interval reinforcement schedule?
the time between reinforcers is kept constant.
What are the strengths of operant conditioning?
supported by studies conducted on both humans and animals.
skinner conducted experiments on animals using an operant chamber.
there are consistent findings regarding the ability to modify behaviour using reinforcement and punishment.
chase et al has shown that brain systems that relate to reinforcement in humans.
What are the weaknesses of operant conditioning?
it only explains how existing behaviours are strengthened or weakened not where behaviours originate.
although operant conditioning explains a much wider more complex chains of behaviour than classical conditioning, it is still an incomplete explanation of the acquisition of all new behaviour.
operant conditioning is only a partial explanation for learning.
operant conditioning is open to abuse.
What are the applications of operant conditioning?
has been applied to education and childcare.
systems of reinforcement are used in schools, nurseries and other settings involving children to reinforce desirable behaviour through positive reinforcement e.g. star charts.
operant conditioning is practical not just theoretical.
What are the strengths of schedules of reinforcement?
supported by studies conducted on humans and animals.
experiments have compared the effects of different partial reinforcement schedules on animal and human learning with consistent results.
Latham and Dossett found that mountain beaver trappers responded better to variable ratio pay than fixed ratio pay.
What are the weaknesses of schedules of reinforcement?
properties of human reinforcement do not give a complete explanation of human motivation.
reinforcement properties provide an account of extrinsic motivation which describes the effect of external factors e.g. when offered a reward.
human behaviour is also a result of intrinsic motives e.g. interest and enjoyment.
only a partial explanation for human behaviour.
What are the applications of schedules of reinforcement?
behaviour modification systems have been used to treat mental health health disorders such as schizophrenia.
Lovaas therapy involves intensive reinforcement such as shaping in order to normalise some aspects of behaviour in children with ASD.
has practical benefits to clients.