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Memory Processes What roles does memory serve? How do those memory processes affect what we remember?
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Functions of memory Encoding - How do we convert information from sensory energy into a usable representation? Storage - How is information retained? Retrieval - How do we get information back?
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Interference Theory Two types of memory interference: - Retroactive: Learning a later item interferes with an item we learned earlier. - Proactive: Learning an early item interferes with learning of a later item. Why does interference happen? What does it say about encoding?
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Retroactive interference and the phonological loop Conrad (1964): Errors recalling visually presented letters are more likely to be a substitution of acoustically similar letters (I.e. P for B, F for S, etc.) Baddeley (1966): Recall of a list of acoustically similar words is worse than recall of acoustically distinct words.
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Retrieval How accurate is memory retrieval? Loftus’s car accident video –Depending on the verb used, people reported different speeds: Smashed: 40.8 mph Collided: 39.3 Bumped: 38.1 Hit: 34 Contacted: 31.8 –People also differentially remembered broken glass based on the verb (N=50 in each group): Smashed: 16 yes, 34 no Hit: 7 yes, 43 no No question: 6 yes, 44 no. Loftus’s “Lost in the Mall” study.
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Structures that affect retrieval Schema - Memory structure that organizes information about static situations Script - Memory structure that organizes information about dynamic situations
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Schemas Broad term that encompasses a number of different ways of organizing information. In its simplest form - A way of representing the “typical” something. e.g., the dog schema, the office schema, the bathroom schema, etc.
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Scripts Scripts are very similar to schemas, but they are used to store generic versions of common episodes. e.g., the restaurant script
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Constructed Memory Is memory just a videotape, playing back what we actually remember? Or do we construct it, based partly on events, but also based on expectations and beliefs? In other words, does memory work bottom-up or top-down?
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