Dual Storage Model of Memory

1. Dual Storage Model of Memory Front Table

2. Dual Storage Model of Memory • made up of 3 components • 1. Sensory Register • 2. Short-Term Working Memory • 3. Long-Term Memory. It is know as a dual store model because of its claim that short-term memory and long-term memory are distinctly different entities. • How it works: Information is received by the sensory register then sent into short-term memory where it either moved to long-term memory or is lost. Information can also move from long term memory to short-term memory

3. Loss Loss Loss Input Sensory Register Short-Term /Working Memory Long-Term Memory Input Input

4. Sensory Register • 1st component of the dual storage model. • Holds incoming information Characteristics: 1. Capacityunlimited 2. Forms of Storage stored in the same way it was sensed. 3. Duration remains for only a very brief time then sent to working memory if needs to be processed Example seeing a trail of light from a waving flashlight.

5. Working Memory • Definition: where info is mentally processed • Characteristics: has a limited capacity and can handle only so much information at one time, • middle component of the Dual Store Model of Memory • short term or working memory can access information from both the sensory register and long term memory.

6. Working Memory (cont’d) 1. Capacity limited 2. Forms of Storage: “the magical number seven plus or minus two” (p. 177) 3. Duration: approximately 5 to 20 seconds

7. Attention • is closely associated with working memory information paid attention to moves onto working memory (p. 172) • Motion • Size • Intensity • Novelty • Incongruity • Emotion • Personal significance • Social cues

8. Long Term Memory Definition: memory for info over the long run (p. 18); includes both procedural and declarative knowledge • Capacity - Unlimited • Forms of Storage - explicit knowledge and implicit knowledge • Duration: indefinitely long; “forgetting” seems to be more of a retrieval process than storage