Lecture 11 Memory (Part I)

Memory for image fades after 13 sec or so making it

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Memory for image fades after 1/3 sec or so, making it hard to report entire display. Sensory Memory Store Sensory memory is a brief persistence of a stimulus. Large capacity Decays rapidly o 0.3 sec for iconic mem
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o 2 sec for echoic mem Divided into two subtypes: o Iconic memory o Echoic memory Sensory and Working Memories Attention is needed to transfer information to working memory. Working Memory Store Function- conscious processing of information o Where information is actively worked on. Properties of Phonological Loop Limited Capacity (only 7 plus or minus 2 chunks of information) Temporary, sound-based storage Must be attended to periodically and rehearsed in order to be preserved. Empirical Support for the Phonological Loop The Phonological similarity effect. The word-length effect Phonological Similarity Effect Impaired serial recall when the items are similar in sound Explanation: o Phonological store is based on a phonological code and similar sounding items have a similar code. o Similar codes produce more interference. Word-Length Effect The longer the word, the longer it takes to rehearse with the phonological loop and thus the higher likelihood of its degrading before it can be rehearsed. Phonological Loop Summary Preserves information for about 2 seconds unless it is refreshed.
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