Refer to figure.
SHORT TERM MEMORY

Otherwise known as working memory, this is for data that is used and forgotten almost instantly. The capacity of the working memory is limited to 5 plus/minus 2 items (7 plus/minus 2 accrding to the old syllabus), which can be stored for an average period of 15 to 20 seconds. Some information can last in short-term memory for up to a minute if rehearsal strategies are used. The information in short-term memory is also highly susceptible to interference. Any new information that enters short-term memory will quickly displace old information. Similar items in the environment can also interfere with short-term memories.