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The Three Memory Storage Systems
In cognitive psychology, memory is usually divided into three stores: the sensory, the short-term, and the long-term.
In may report I will show you these three types of memories and give you information about characteristics.
The progress of information through these stores is often referred to as:
The Information Processing Model

Sensory Memory
The sensory memory retains an exact copy of what is seen or heard (visual and aural). It only lasts for a few seconds, while some theorize it last only 300 milliseconds. It has unlimited capacity.

Characteristics
first, it is a high capacity form of memory registration of visual data. Second, information in the sensory memory is un-interpreted. Third, sensory memory is short; visual information, for example, fades away in less than a second.
Short-Term Memory
what information moves from sensory memory to short-term memory. Short Term Memory is most often stored as sounds, especially in recalling words, but maybe stored as images.
Works like RAM memory in computers; provides a working space. Is thought to be 7 bits in length, that is, we normally only remember 7 items
characteristics
1-A limited capacity of up to seven pieces of independent information.
2-The duration of these items last from 3 to 20 seconds.
3- Decay appears to be the primary mechanism of memory loss.
Long-Term Memory
Characteristics
1. Long Term Memory is much more stable than short-term memory.
2. It is influenced by understanding what has been perceived.
3. Some type of information is encoded in Long Term memory more easily.