Nature Of Memory Flashcards
Define long-term memory
Happened in the past
2-100 years
Unlimited capacity and duration
Define short term memory
Your memory for immediate events
Last very short time disappears unless rehearsed
Has a limited capacity & duration
Working memory, understanding language & problem solving
Define duration
Measure of how long a memory will last before forgotten.
Define Capacity
Measure of how much can be held in memory
Define encoding
Way info is changed so that its stored in memory
What are the 3 different ways of encoding?
Visual codes
Acoustic codes
Semantic codes
How is short term memory encoded?
Acoustically
How is long term memory encoded?
Semantically
Define chunking
Grouping letters or digits into meaning
Explain the Peterson and Peterson experiment
- 1959
- participants were presented with trigrams & asked to recall them
- between exposure & recall they did an interference task
What were the results of the experiment?
- delay length varied
- recall decline with length of interference task
Describe Bahrick Et Al (1975) experiment
- Tested visual long term empty using naturalistic material
- 400 students recalled class mates:
Free recall
Photo recognition
Recognition and photo matching
What were the results if the experiment?
- recall was remarkable high
- 80% name recognition at 48 years
- 30% free recall at 30 years
Supports the idea that LTM can store some types of info for a very long time
