Psychology Unit 1 as Revision

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AS example essays Bournemouth School [pic] Psychology Department Key Approaches January 2011 Describe the behaviourist approach in psychology and evaluate the research methods used by behaviourist psychologists. (10 marks) The behaviourist approach in psychology focuses on learning and assumes that we are born as ‘tabula rasa’ (blank slates) onto which all of our experience is written. The key assumption of this approach is that behaviour is due to past experience. This is the idea of environmental determinism, and suggests that we have no free will but are simply a product of the stimulus-response associations that we have learnt. Behaviourists focus on two key concepts – classical and operant conditioning. Classical conditioning is learning associations between events that occur in the environment. This can be best shown in a diagram: UCS (unconditioned stimulus) → UCR (unconditioned response) UCS (unconditioned stimulus) + NS (neutral stimulus) → UCR (unconditioned response) CS (conditioned stimulus) → CR (conditioned response) Pavlov demonstrated this by showing that dogs have a reflex response which means they salivate (UCR) to food (UCS). When a neutral stimulus (e.g., a bell) is repeatedly associated with the unconditioned stimulus (food), dogs learn to salivate (CR) simply at the ringing of a bell (CS). Operant conditioning is learning due to the consequences of behaviour. This is related to the law of effect described by Thorndike, which suggests that if a behaviour has a pleasant consequence (reinforcement is occurring) it is more likely to be repeated. If on the other hand, a behaviour has an unpleasant consequence (punishment is occurring), it is less likely to be repeated. Behaviourist psychologists use controlled laboratory experiments to research their ideas. This has the advantage of
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