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EDEXCEL A-LEVEL COGNITIVE PSYCHOLOGY QUESTIONS AND ANSWERS. What are case studies? ---ANSWER: Allows data gathered to be in-depth and detailed. Gathers data from many different sources and different research methods What type of data do case studies gather? ---ANSWER: Qualitative, but can also give quantitative (e.g. IQ tests) What is triangulation? ---ANSWER: Gathering data using different research methods and developing themes. Who was HM? ---ANSWER: Henry Molaison What happened t...