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PSYA01H3 (1,206)
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PSYA01 Ch 8

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Steve Joordens

Ch 8 MemoryMemory the cognitive processes of encoding storingretrieving info Encoding the process by which sensory info is converted into a form that can be used by the brains memory systemStorage the process of maintaining info in memory hiddeninactivatedRetrieval the active processes of locatingusing stored info progressive reactivation Donald Hebb The brain remembers info in 2 diff ways Dual Trace Theory1 Active info state repeated firings of neurons2 Latent info state Sensory memory memory in which representations of the physical features of a stimulus are stored very brief durations Shortterm memory an immediate memory for stimuli that have just been perceived its limited in capacitydurationIe your movie is playing in theatre 3 Longterm memory memory in which info is represented on a permanent or nearpermanent basis no known limitsis durable Iconic memory a form of sensory memory that holds a brief visual image of a scene that has just been perceived also known as visible persistence the mental image fades before it can be transferred to longerlasting memoryEchoic memory a form of sensory memory for sounds that have just been perceived in order to comprehend speech words need to be identifiedthis can be done when all acoustical info is stored temporarily until all sounds have been received A simplified model of info flow in human memory is 1 Sensory input 2 Sensory memory 3 Shortterm memory 4 Longterm memoryBut a more accurate model of memory is 1 Visual info f iconic memory seeing PXLMR 2 Longterm memory what is already known about these letters f here moves to shortterm memory 3 Shortterm memoryTherefore info put into shortterm memory can actually be retrieved f either sensory memory or longterm memory Working memory memory for new infoinfo retrieved f longterm memory used interchangeably w shortterm memory Ie we are asked to multiply 7 by 19 info abt the request enters our shortterm memory f our sensory memory actually performing the task though requires that we retrieve info f longterm memory what does multiply mean what is a 7a 19Working memory can be seen as a bhvr that we use to maintain info over the short term Why do we lose info f our shortterm memory Working memory resembles a juggler trying to maintain several balls in the air as long as the juggler works actively at throwingcatching the balls they wont fallhit the ground decayRehearsal of phonological shortterm memory such as subvocal articulation prevents decay Primary effect the tendency to remember initial info in the memorization of a list of words the primary effect is evidenced by better recall of the words early in the listThe first words on the list are rehearsed the mostcan be stored in longterm memorythus remembered better whereas the compilation of words begin to fill up shortterm memoryrehearsal time is limited Recency effect the tendency to remember later info in the memorization of a list of words the recency effect is evidenced by better recall of the last words in the listThe wordsthe end of the list were last to be heardthus still fresh in the shortterm memory
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