What are the coding, capacity and duration of long-term memory?

Long-term memory codes information mainly by meaning, which is semantic coding. Long-term memory has an effectively unlimited capacity and can last a lifetime.

How does the case of the patient HM support the multi-store model?

HM had most of both hippocampi removed in 1953 to treat severe epilepsy. HM's short-term memory still worked, but he could no longer form new long-term memories, suggesting separate stores.

What is episodic memory?

Episodic memory is the long-term store of personal experiences, such as a tenth birthday party. Episodic memories include details of when and where events happened and how they felt.

CCEA A-Level Life and Health Sciences 0008

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Brain Science

Memory models, forgetting and eyewitness testimony

3 things to know
AS 4

Overview

The multi-store model and the case of HM, episodic, semantic and procedural memory, the working memory model, interference and retrieval failure, and factors affecting eyewitness testimony.

What you need to know

Answer each one before you reveal it.

Your recallNot started

Key term

Describe the multi-store model of memory.

Key term

What are the coding, capacity and duration of the sensory register?

Key term

What are the coding, capacity and duration of short-term memory?

Questions from this subtopic

Each one with the model answer underneath.

1
Describe the multi-store model of memory.
Model answer
The multi-store model proposes three separate stores of memory. Information enters a sensory register, and attention passes it into short-term memory. Rehearsal then transfers it to long-term memory.
2
What are the coding, capacity and duration of the sensory register?
Model answer
The sensory register holds information in the form it arrived, such as visual or acoustic. The sensory register has a very large capacity but keeps information for well under a second.
3
What are the coding, capacity and duration of short-term memory?
Model answer
Short-term memory codes information mainly acoustically and holds about seven items, plus or minus two. Short-term memory lasts only about 18 to 30 seconds without rehearsal.
4
What are the coding, capacity and duration of long-term memory?
Model answer
Long-term memory codes information mainly by meaning, which is semantic coding. Long-term memory has an effectively unlimited capacity and can last a lifetime.
5
How does the case of the patient HM support the multi-store model?
Model answer
HM had most of both hippocampi removed in 1953 to treat severe epilepsy. HM's short-term memory still worked, but he could no longer form new long-term memories, suggesting separate stores.
6
What is episodic memory?
Model answer
Episodic memory is the long-term store of personal experiences, such as a tenth birthday party. Episodic memories include details of when and where events happened and how they felt.

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