Semantic network theory

Question 1

Define: semantic network theory

Answer 1

proposes that information in the LTM is organised in a systematic, hierarchical structure, in the form of overlapping networks of concepts that are connected by meaningful links.

Question 2

Describe how info is stored in semantic networks

Answer 2

Each concept is represented by a NODE.
Nodes are connected by meaningful links.
Nodes and links organised in a hierarchical structure (begins with general concepts which links to more specific concepts).

Question 3

Each node contains characteristics of that concept.

Answer 3

YES.

Question 4

According to the semantic network theory, how is info retrieved from LTM?

Answer 4

Via spreading activation

Question 5

Define: spreading activation theory

Answer 5

proposes that activating one node during retrieval from a semantic network increases the likelihood that associated nodes will become activated

Question 6

How does the hierarchical structure of a semantic network aid in retrieval?

Answer 6

WE can deduce characteristics by moving up a hierarchy because items higher in the hierarchy already contain the characteristics. This eliminates the need to duplicate characteristcs, so less needs to be remembnered

Question 7

Conditions of spreading activation?

Answer 7

More nodes are activated, more likely required info will be retrieved/more quickly.
Shorter the link between nodes, the stronger the assocation and less time to retrieve info.

Question 8

How do we actually do the retreival process?

Answer 8

A retrieval code activates a node. SPreading activation causes related nodes to become activated, allowing us to follow the links to find the specific node we need.