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Information Processing and Memory

Memory and the working memory model

  • 3 things to know
  • Paper 1

Overview

Short-term and long-term memory, the working memory model with its central executive, phonological loop, visuospatial sketchpad and episodic buffer, chunking and chaining.

What you need to know

Answer each one before you reveal it.

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Key term

What role does memory play in decision making?

Key term

Describe the capacity and duration of short-term memory.

Key term

Describe the capacity and duration of long-term memory.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What role does memory play in decision making?

    Model answer

    The performer compares incoming information with stored experiences to choose a response. Memory also holds the motor programmes used to carry the response out.

  2. 2

    Describe the capacity and duration of short-term memory.

    Model answer

    Short-term memory holds a limited amount, about seven items give or take two. Information lasts up to about 30 seconds unless it is rehearsed.

  3. 3

    Describe the capacity and duration of long-term memory.

    Model answer

    Long-term memory has an almost unlimited capacity. Information, including well-learned motor programmes, can be stored for a lifetime.

  4. 4

    How does information pass from short-term to long-term memory?

    Model answer

    Information is rehearsed and practised until it is encoded into long-term memory. Repeated practice of a skill stores its motor programme permanently.

  5. 5

    Who proposed the working memory model, and what did it replace?

    Model answer

    Baddeley and Hitch proposed the working memory model in 1974. The model replaced the idea of short-term memory as a single, simple store.

  6. 6

    What is the role of the central executive?

    Model answer

    The central executive controls attention and directs information to the other components. The central executive has a limited capacity and links to long-term memory.

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