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What are the characteristics of the various stages of memory? PowerPoint Presentation
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What are the characteristics of the various stages of memory?

What are the characteristics of the various stages of memory?

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What are the characteristics of the various stages of memory?

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  1. What are the characteristics of the various stages of memory? • The “standard” model of memory • Sensory memory • Working memory • Coding information into Working memory • Peterson & Peterson’s demonstration • Distinguishing between Working memory and Long-term memory (LTM)

  2. Concepts arising out of the initial class demonstration: • Primacy effect • Recency effect • Frequency • Distinctiveness • Organization • Visual imagery • (Mnemonic device) • Reconstruction

  3. Sensory Input Three-Stores Model of Memory (See Gleitman, p. 245) Maintenance Rehearsal Attention Encoding Sensory Memory Working Memory LTM Indefinite duration .5” - 3” duration 10” - 15” duration Retrieval

  4. Visual (iconic) memory (Gleitman pp. 279-282) eidetic memory mental rotation (Gleitman, p.280) Acoustic (echoic) memory Tactile memory Sperling’s demonstration Tachistoscope

  5. Example of the type of short-duration display used in George Sperling’s studies of visual memory: H R F Z J M V L B K C S

  6. Peterson & Peterson study 100 80 60 % items recalled 40 20 0 0 3 6 9 12 15 18 Interval before recall (sec.)

  7. 0-second delay Recency Effect 30-second delay Recency effect and working memory: Effect of delay between list and test (See also Gleitman, p. 246)

  8. 100 80 Slow (2 sec. per word) 60 % items recalled 40 Primacy Effect 20 Fast (1 sec. per word) 0 5 15 1 10 20 Serial position Primacy effect and long-term memory: Effect of rate of presentation of words (See also Gleitman, p. 246)