Approaches notes Flashcards
What was Wundt’s influence on psychology as a science?
- Wundt’s ‘Experimental Psychology’ led to the subjects emergence as a science - all introspections were recorded under strictly controlled conditions using the same stimulus every time, and the same standardised instructions were issued to all participants allowing procedures to be replicated
- BUT… This is still regarded as controversial
What is the criteria of a science?
- objectivity - scientific observations should be recorded without bias
- control - should occur in controlled situations
- replicability - findings should be easily replicated to make scientists confident in the results
- falsifiability (hypothesis testing) - Theories should generate predictions (hypotheses) which can be tested and proved either right or wrong
- generalisability - results can be used to explain and predict future behaviour (at other times or in other samples)
What are the arguments for psychology as a science?
- Psychology should have the same aims as any other science
- The majority of major approaches within Psychology (Behavioural, Cognitive and Biological) use scientific procedures to investigate theories
- They aim to do this in a controlled and way as possible
What are the arguments against psychology as a science?
- Other approaches within Psychology are less scientific
- They don’t use objective methods to study behaviour
- These methods are often unreliable - self report and case study methods which can be biased and subjective
- Its very difficult to get a truly representative sample, so findings can’t be easily generalised
- Most psychology experiments are open to extraneous variables
- Such as demand characteristics
- These are very difficult to control
What are psychology’s early roots?
- The basic principles of psychology can be traced back to the philosophers of ancient Greece.
- Even the word ‘psychology’ is derived from Greek words. ‘Psyche’, meaning mind/soul, and ‘Logos’, meaning the study of.
- However, it wasn’t until the 16th C that the theories of modern psychology began to emerge.
Who was Wilhelm Wundt?
- The ‘father of psychology’.
- Wundt was the first person to truly separate psychology from philosophy
- He wanted to study the mind in a more structured and scientific way - wanted to document and describe the nature of the human consciousness (became known as Introspection)
- structuralism - isolating the structure of the consciousness in this way
- In 1879 he opened the first Institute for Experimental Psychology, in Leipzig.
What is Introspection?
- his was a technique that Wundt favoured as a way of uncovering what people where thinking and feeling
- It involves analysing your own internal thoughts, feelings and sensations after they were presented with certain stimuli (remember there were no brain scans!)
How did introspection work?
- Ppts trained to systematically report their own experience
- Ppts focus on a stimulus (e.g. metronome)
- …and on one mental process (e.g. memory)
- Ppts produce report as trained
- Wundt can now compare reports to generate theories.
Advantages and disadvantages of introspection
- Introspection pioneered taking a scientific, reductionist approach to the study of human thoughts and behaviour (especially the cognitive approach). However…
- self-report responses are difficult to validate
- people are subjectively reporting on their individual experiences:
- they could be affected by things like social desirability bias
- as self reports can’t be conformed or collaborated, they may not be valid
- people are subjectively reporting on their individual experiences:
What is the definition of empiricism?
Empiricism - the belief that all knowledge is derived from sensory experience. It is generally characterised by the use of the scientific method in psychology
- Empirical methods were first applied to the study of human beings by Wundt
What is the definition of scientific method?
Scientific method - refers to the use of investigative methods that are objective, systematic and replicable, and the formulation, testing and modification of hypotheses based on these methods
- Introduced by Wundt and his followers - new ‘scientific approach’
Sigmund Freud
1900s - Sigmund Freud - publishes The interpretation of dreams, and the psychodynamic approach is established. Freud emphasised the influence of the unconscious mind on behaviour, alongside development of his person centred therapy: psychoanalysis. He argued that physical problems could be explained in terms of conflicts within the mind.
John B. Watson
1914 - John B. Watson - Didn’t like that introspection produced subjective data. He proposed that a truly scientific psychology should restrict itself only to studying phenomena that could be observed and measured. Writes Psychology as the Behaviourist views it and BF Skinner establishes the behaviourist approach. The psychodynamic and behaviourist approaches dominate psychology for the next 50 years. Focused on the scientific process including lab experiments.
Carl Rogers and Abraham Maslow
1950s - Carl Rogers and Abraham Maslow develop the humanistic approach - the so called ‘third force’ in psychology, rejecting the views favoured by behaviourism and the psychodynamic approach that human behaviour was not determined by the individual. Humanistic psychologists emphasise the importance of self-determination and free will.
1960s
the cognitive revolution came with the introduction of the digital computer. This gave psychologists a metaphor for the operations of the human mind. The cognitive approach reintroduces the study of mental processes to psychology but in a much more scientific way than Wundt’s earlier investigations. around the time of the cognitive revolution, Albert Bandura proposes the social learning theory. This approach draws attention to the cognitive factors in learning, providing a bridge between the newly established cognito9ve approach and traditional behaviourism
What is the law of effect?
- A response that is followed by pleasant consequences becomes more probable and a response that is followed by unfavourable consequences becomes less probable. This is the basis for operant conditioning.
- Voluntary behaviours are learned via reinforcement or punishment
- reinforcement is where positive outcomes for behaviour are introduced in order to encourage that behaviour to continue. These can be either positive or negative reinforces
- punishment is where negative outcomes are introduced in order to discourage a behaviour. These can either be positive or negative
- Voluntary behaviours are learned via reinforcement or punishment
What are voluntary behaviours?
Voluntary behaviours are learned via reinforcement or punishment
Define negative reinforcement.
Negative reinforcement - involves the removal of, or escaping from unpleasant consequences
Define positive punishment.
Positive punishment - receiving something unpleasant
Define negative punishment.
Negative punishment - removing something pleasurable
What are the reinforcement schedules?
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Fixed schedule
- In a fixed schedule, the number of responses or amount of time between reinforcements is set and unchanging. The schedule is predictable.
-
Variable schedule
- In a variable schedule, the number of responses or amount of time between reinforcements changes randomly. The schedule is unpredictable.
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Ratio schedule
- A ratio schedule reinforcement occurs after a certain number of responses have been emitted.
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Interval schedule
- Interval schedules involve reinforcing a behaviour after a period of time has passed.
How can behaviour be shaped?
- Behaviour can be modified by reinforcing successive approximations to target behaviour.
- Reinforcement can be scheduled by ratio (every 10th time) or interval (every 10 minutes e.g. monthly salary)
- The most effective learning schedule is a variable ratio e.g. the animal is reinforced on average every 10th time, but it is unpredictable)
What are the advantages of operant conditioning?
The methods used to test OC were highly scientific
- Skinner’s use of his ‘Skinner-Box’ to test the theory under controlled circumstances is a good example
- Having high internal validity allowed hm to establish a casual relationship (a relationship between two events, or variables, in which one event or process causes an effect on the other event or process) between conditions he was testing
- This shows that operant conditioning can be used to shape behaviour
Operant conditioning has had many useful applications in the real world
- e.g. through a token economy
- a system where desirable behaviour can be reinforced with the use of tokens, which can then be exchanged for other rewards
- e.g. Upper and Newton (1971) found that the weight gain associated wit taking antipsychotics could be reduced wit token economy regimes
What are the disadvantages of operant conditioning?
skinner’s research has been criticised for the use of non-human animals
- e.g. the use of rats and pigeons in the skinner box
- these are very different animals to humans and may learn at different speeds and in different ways
- therefore, the results may not be generalizable to humans, and may not help us to understand human learning
- BUT… the Upper and Newton (1971) evidence can be usefully applied to shape human behaviour
What are the advantages of behaviourism?
Introduced an empiricist approach to psychology
- This made psychology a lot more scientific and high in interval validity
- This allowed cause and effect relationships to be discovered between stimuli and behaviour
What are the disadvantages of behaviourism?
Behaviourist explanations are deterministic. They ignore the concept of free will
- skinner argued strongly that free will is merely an illusion
- this is a depressing vie of human nature
Behaviourist explanations are also reductionist (It doesn’t consider how other factors interact together in influencing behaviour which reduces the validity of the approach/debate.)
What is the link between behaviourism and gambling?
Gambling addictions can be explained by the principles of behaviourisms. The lottery and fruit machines use variable ratio to make the player believe that there is a higher chance of winning than there is.
What is the behaviourist approach?
This approach assumes that a person is the product of their environment (nurture), they are born a ‘blank slate’ and all behaviour is learned. those who take this approach argue that in order for psychology to be scientific it should focus on observable behaviour which can be objectively measured, rather than our own thoughts, which can’t easily be measured
What assumptions are there of the behaviourist approach?
- Behaviour is learned
- all behaviour (apart from reflexes in new-borns) is learned from experience.
- we are essentially born ‘Tabula Rasa’, or blank slates
- this is known as empiricism
- the mind is ‘irrelevant’
- we can’t directly observe what people are thinking
- the only measurable data is gained from observing behaviour directly
- environmental determinism
- the is no free will. Our behaviour is controlled by forces in the environment, and can only be changed by changing the environment
- animals and humans learn in the same ways
- humans learn in the same way as other animals, through simple stimulus-response associations
- we learn to drive in the same way that a cat learns to use a cat flap
- therefore, animal studies can be used to make generalisations about humans
- experimental results can be used to make laws about human behaviour (a nomothetic approach )
What is classical conditioning?
- a way of learning from our environment where we associate two stimuli, so that one comes to cause the same response as the other
- this is famously demonstrated in Pavlov’s research with dogs
What did Pavlov discover?
- classical conditioning explains how we associate different things with reflexive actions, and so reflexive actions start occurring in response to different stimuli
- Pavlov discovered that any object or event which the dogs learned to associate with food (such as a food bowl or bell) would trigger the same response, he realised he had made an important discovery, and that he devoted the rest of his career to studying this type of learning
What was ‘Little Albert’ (Watson and Rayner 1920)?
- Watson and Rayner demonstrated that fear could be developed through classical conditioning. Watson proposed that the emotion of fear in infants is a natural response to loud noise.
- An 11 month-old child known as Little Albert showed no fear of stimuli such s a white rat, or cotton wool. He di however show a fear response to a loud noise behind him, a hammer hitting a steel bar. The experimenters made this noise several times, at the same time presenting him with a white rat. Albert developed a fear of rats (and indeed of all white furry things), a process called generalisation.
What is ecological validity?
Ecological validity - refers to whether a study’s findings can be generalized to additional situations or settings.
What are the principles of classical conditioning?
Timing
Extinction
Spontaneous recovery
Generalisation
Define timing.
Timing - if the NS cannot be used to predict the UCS (e.g. if it occurs after the UCS or the time interval between the two is too great), then conditioning does not take place
Define extinction.
Extinction - Pavlov discovered that unlike the UCR, the CR does not become permanently established as response. After a few presentations of the CS in the absence of the UCS, it loses its ability to produce the CR
Define spontaneous recovery.
Spontaneous recovery - following extinction, if the CS and the UCS are then paired together once again, the link between them is made much more quickly
Define generalisation.
Generalisation - Pavlov discovered that once an animal has been conditioned, they will also respond to other stimuli that are similar to the CS
Define stimulus.
stimulus - anything, internal or external, that brings about a response
Define response.
response - any reaction in the presence of the stimulus
Define neutral stimulus.
neutral stimulus (NS) -a stimulus which does not naturally produce a response
Define unconditioned stimulus.
unconditioned stimulus (UCS) - a stimulus that produces a reflex reaction
Define unconditioned response.
unconditioned response (UCR) - an innate, reflex response
Define conditioned stimulus.
conditioned stimulus (CS) - the stimulus which produces the learned response after an association has taken place
Define conditioned response.
conditioned response (CR) - learning by association. It occurs when two stimuli are repeatedly paired together.
What are the advantages of classical conditioning?
- There is research support that classical conditioning can affect behaviour
- E.g. Watson and Rayner (1920) showed that CC could create phobias…
- Classical conditioning has useful applications, e.g. as an effective in the treatment of phobias
- systematic desensitisation
- Gilroy et al. (2003) conducted an experiment to assess the effectiveness of desensitisation as a treatment for people with a phobia of spiders
- Grp1 received desensitisation therapy for their phobia. Grp 2 were the control group and had ‘relaxation without exposure’
- After both 3 and 33 months the SD group were less fearful on a spider phobia questionnaire than the control group
- This CS has stopped producing the CR. This known as extinction
What are the disadvantages of classical conditioning?
- Classical conditioning is a reductionist explanation of behaviour
- It explains behaviour by breaking down to just a single explanation (in this case stimulus-response associations)
- This is over simplistic, as it ignores all the other things that could affect behaviour
What is social learning theory?
Later behaviourists suggest that there must be some meditational processes which lie between the stimulus-response that influence our behaviour. This approach assumes that mental processes are important in how people learn behaviour. Also it seems possible that we can learn by observing another persons behaviour which behaviourism didn’t allow for
- SLT sees people as active manipulators of their of their own environment
- concerned with human rather than animal behaviour
- vicarious reinforcement - watching someone else get a punishment/reward for their actions
What is modelling?
- In order for social learning to take place, someone has to demonstrate, or morsel, the behaviour to be learned
- There are several different types of model:
- live models - parents/teachers/peers
- Symbolic models - celebrities, sports stars, or characters form films or tv
What is imitation?
- Models provide examples of behaviour that can be observed by the individual and then reproduce in a process known as imitation
- research on imitation has shown that, unlike the slow learning process of conditioning, whole patterns of behaviour can be rapidly acquired when a model is present
- There are several key determinants:
- The characteristics of the model
- The observers perceived ability to replicate the behaviour
- The observed consequences
- self efficacy - an individual’s belief in his or her capacity to execute behaviours necessary to produce specific performance attainments
What is identification?
- This refers to the extent to which the observer relates to the model
- this is often represented by how similar they are to the model
- Identification occurs when the observer feels they are similar enough to the model so that they will experience the same outcomes in the observed situation
- research suggests that children are much more likely to identify and potentially learn from models who are similar to them
- particularly same sex models
What is vicarious reinforcement?
- This concept suggests that an individual does not need to experience rewards or punishments directly in order for learning to take place
- Instead, they can observe the consequences experienced by the model and make judgements based on the likelihood of them experiencing the same outcomes
- This is the cognitive process that Bandura claims to differentiate SLT from other forms of conditioning
What are the 4 mediational processes?
- for effective learning to take place, cognitive mediational processes need to occur:
- Attention - you have to pay attention to the behaviour
- Retention - you need to remember what you saw
- Reproduction - you have to judge whether you are able to reproduce the behaviour
- Motivation - you have to evaluate the consequences of the behaviour
What was Bandura’s experiment?
Hypothesis: That those who watched aggressive adults will imitate them and that those who watched an adult of the same sex as them will be more likely to replicate their actions than those of an opposite sex
Sample: Tested 36 boys and 36 girls from Stanford University Nursery School aged between 3 to 6. researchers pre-tested the children and judged their aggressive behaviour on four 5-point rating scales.
Procedure 1: In the first room they see an aggressive adult beat up a bobo doll. Or they see a non aggressive model. Or they saw no model at all.
Aggression Arousal: All children were taken into a room with toys. As soon as the child started playing with them, the experimenters then took the toys away
Observation in room: The child went into a room with non aggressive toys and bobo doll. They were watched through a one way mirror and observations were made at 5 second intervals
Summary results: Those who observed the aggressive model had more aggressive responses than those who were in the non-aggressive or control groups. Boys were more physically aggressive and there was little difference in verbal aggression. Boys were more likely to imitate same sex models
The idea at the time was that watching aggression would purge you of aggression. The experiment concluded that this was indeed not true. Boys who watched men had the closest imitation. What the children saw, the children did. Banduras experiment took place, just as tv was being entered into the home - repeated the experiment later on of aggression from the tv. Children imitated what they did. How we learn as we grow changes, we develop empathy and the ability to reflect on what we see.
What was Bandura, ross and ross (1963)?
- would children only imitate aggressive role models seen in real life, or in film or cartoons as well?
- The basic procedure was the same as for the previous study, but one group watched a film of the aggressive model, and another watched a film where the aggressive model was dressed as a cartoon character
What was Bandura et al (1963)?
Children were more aggressive after watching filmed and cartoon models
What did Bandura research in 1965?
- Would imitation change if they saw the model rewarded or punished?
- IV is now whether the model is rewarded, punished or there were no consequences
- In the Reward condition, the experimenter arrived a praised the model (”Rocky”) for his “superb aggressive performance” and gave Rocky sweets, which he ate
- In the Punishment condition, the experimenter called Rocky “a big bully” and hit him with a rolled-up newspaper
- The ‘Model Punished’ condition produced much less imitation, especially among the girls. The ‘Reward’ condition produced about the same imitation form girls and boys as the ‘No Consequences’ condition (though boys were more aggressive than girls overall)
What are the strengths and weaknesses of Banduras studies?
- Strengths:
- Banduras studies took place in carefully controlled environments, increasing the internal validity of the studies
- Weaknesses:
- Aggression could have been produced because of demand characteristics, rather than genuine observational learning
What are the strengths and weaknesses of the SLT?
Strengths:
- The principles of SLT have had useful applications to real-life human behaviour
- e.g. Criminal Behaviour
- Osborne and West (1979)
- 40% of sons with fathers with criminal convictions had committed a crime before the age of 18, compared to only 13% of a control group
- Farringdon et al (2006)
- Found that one of the most important risk factor at the age of 8-10 for later offending was family criminality
- SLT was also used to justify a “watershed” on TV, where violence, sexual content or obscene language are only shown after 9pm
Limitations:
- SLT is reductionist, as it disregards other potential influences on behaviour… such as biology (though it is a fuller explanation than just behaviourism)
- e.g. the development of criminal behaviour (see above) behaviour may not be entirely due to SLT, but instead may be influenced by genetics
- Therefore SLT does not provide a full explanation of behaviour (though it is a fuller explanation than just behaviourism)
- Also, if there are so many potential influences on specific behaviour, it becomes very difficult to show how one influence (e.g. social learning) can be the main casual issue
When and why was the emergence of cognitive neuroscience?
- An approach studies the links between brain structure and function and cognition
- e.g. are different areas of brain involved for different cognitive processes?
- Does activity in an area/ areas change for different tasks/ processes?
- The influence of neuroscience on Psychology begins in 70s and 80s
- Modern brain imaging techniques led to the emergence of cognitive neuroscience
What methods are used in cognitive neuroscience?
- Lesion studies
- Causing brain damage (almost always in animals) to see how behaviour changes
- Case studies of brain damage
- e.g. in humans after an accident
- Neuroimaging (brain scanning)
- Pinpointing areas of the brain which are active during certain tasks
- e.g. PET scans are used to demonstrate brain activity in memory tasks
Give one practical application of cognitive neuroscience.
- Areas of the brain associated with memory:
- Research has found that the prefrontal cortex is active when individuals are working on a task in immediate (i.e. STM) memory (Courtney et al. 1997), whereas the hippocampus is related to episodic LTM formation (Maguire et al. 2000)
- This tells us that different parts of the brain are used for different forms of memory
- Maguires famous studies used London taxi drivers to investigate long term memory
What are the advantages of the cognitive approach?
- One strength of the cognitive approach is that it provides a less simplistic account of behaviour than the behaviourist approach
- it considers the impact of mental processes on behaviour; often overlooked by other approaches
- HOWEVER the approach may still be guilty of machine reductionism
- It assumes that everyone processes information the same way (like an information processing machine)
- This ignores the effect of other factors, such as emotion, personality or biology, which may affect behaviour
- The approach therefore does not provide a full explanation of behaviour
- The approach also has many useful real life applications
- for example, it has had a large influence on the development of therapies such as, cognitive behaviour therapy (CBT)
- The approach is highly scientific. It has always employed highly controlled and rigorous methods of study
What are the disadvantages of the cognitive approach?
- One weakness of the cognitive approach is that the research may lack ecological validity
- Research is often carried out in overly controlled, artificial environments
- This may mean that it is difficult to generalise findings from these experiments to behaviour in the real world
What does the cognitive approach assume?
Assumes that our internal mental processes (e.g. our memories, thinking and opinions) are important features in influencing human behaviour. Cognitive psychologists believe we are all like computers: input - processing - output
Define the cognitive approach.
Cognitive approach - the term ‘cognitive’ has come to mean ‘mental processes’, so this approach is focused on how our mental processes (e.g., thoughts, perceptions, attention) affect behaviour
Define internal mental processes.
Internal mental processes - ‘Private’ operations of the mind such as perception and attention that mediate between stimulus and response
Define Schema.
Schema - a mental framework of beliefs and expectations that influence cognitive processing. They are developed from experience