Memory - 1/23/2010 Lecture 6: Memory Memory Ability to...

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1/23/2010 1 Lecture 6: Memory Memory Ability to store and retrieve information over time Memory is not a “mental videotape” Reconstruction Not playback Encoding Retrieval Storage Get info in Maintain info Get info out Stage 1: Encoding Transform perceptions, thoughts, and feelings into enduring memories Attention Pseudo-forgetting More on this as we go… Elaborative encoding Encoding should match retrieval Stage 2: Storage Maintain information in memory over time 3 Divisions of memory stores Sensory memory Short-term memory Long-term memory
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1/23/2010 2 Sensory Memory Sensory information kept for a few seconds or less Iconic memory Visual < 1 second Echoic memory Auditory < 5 seconds vs. Note: Not the same as negative after-image explained by Opponent-Process Theory! Short-Term Memory Information in conscious attention “Activated memory” Example: Looking up a telephone number Rehearsal Mental repetition of information Re-entry into short term memory Short-Term Memory Short duration 15-20 seconds With no maintenance Limited capacity 7 +/- 2 units Chunking Combining pieces of information into larger meaningful clusters Larger units → More information remembered 16 units → 5 units
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1/23/2010 3 Serial Position Effect What was on the list? Position in list affects memory Primacy effect – early items rehearsed more Recency effect – less time to forget late items Primacy Effect Recency Effect Short-term vs. Working Memory 25 8 15 10 Short-term memory Storage only Allows you to say “25, 8, 15, 10”
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Memory - 1/23/2010 Lecture 6: Memory Memory Ability to...

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