memory from both the long-term and sensory memory is this system's ability to simultaneously process and store information. The knowledge has what is called a "limited capacity", so there is only a certain amount of information that can be stored and it is easily accessible for only a small window of time after it has been processed, with a recall time block of roughly fifteen seconds to one minute.

Experiments dealing with memory span have been conducted by George Miller in 1956 that indicated,