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AS Psychology Coursework Kimberley Webb Abstract This experiment is based on the MacDonald and McGeoch investigation involving retroactive interference. Retroactive interference is where what we have learned is interfered with by subsequent learning. Otherwise explained as when later learning interferes with earlier learning. In my experiment the aim is to investigate whether or not retroactive interference occurs when testing the memory recall of a list of words. The research method used is an experiment and the design is an unrelated measures design. The sampling technique is opportunity sampling. My results show that there is a strong possibility that retroactive interference did occur as all my results agree with my experimental hypothesis and the null hypothesis is rejected. The experimental hypothesis states 'The participants who do not receive an interference list will significantly recall a higher average correct words than the group who received a retroactive interference word list in a free recall memory...

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