2. PRESENTING The Atkinson-Shiffrin Model of Memory It states that we have 3 memories: Sensory Memory, Short-Term Memory, and Long-Term Memory.

3. These memories differ in terms of 3 characteristics: Capacity: how many units of information can be held at one time. Duration of Storage: how long the information can be held. Reason for Forgetting: storage failure versus retrieval failure.

4. Long-Term Memory Relatively permanent storage of information Capacity: virtually unlimited. It contains 2 general kinds of information:

5. Declarative Memory: Information you can describe Nondeclarative Memory: Information you cannot describe Semantic Memory: General information Episodic Memory: Personally experienced events Skilled actions Habits Long-Term Memory Contains...

6. Long-Term Memory Relatively permanent storage of information Capacity: virtually unlimited. Duration of Storage: up to a lifetime. Reason for forgetting: retrieval failure (e.g., interference).

7. Sensory Memory Temporary storage of information Capacity: large; contains most details of sensory input. Duration of Storage: visual: 1/10 second; auditory: 2 seconds. Reason for forgetting: storage failure (e.g., decay).

8. Short-Term Memory Brief storage of information currently being used Capacity: 7 units, plus or minus 2. Duration of Storage: less than 30 seconds without rehearsal. Reason for forgetting: storage failure (e.g., decay, displacement).