All stimuli pass through the SR. Comprises of several sensory registers. Coding in each register is specific. Duration is very brief (less than half a second). Very high capacity. Information passes further into the memory system only if you pay attention to it.
Short term memory
More of a temporary store. Maintenance rehearsal occurs when we repeat material to ourselves over and over again. If we rehearse it long enough, is passes into long term memory
Long term memory
When we want to recall information from LTM, it has to be transferred back to STM by a process called retrieval
