Approaches notes Flashcards
(171 cards)
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