STM and LTM differ in terms of :
Duration - How long a memory lasts.
Capacity - How much can be held in the memory.
Encoding - Transferring information into code, creating s 'trace'.
The Short term memory has a limited capacity and a limited duration, whereas the Long tem memory has an unlimited capacity and is theoretically permanent.
Peterson and Pterson(1959) - duration of STM:
Method - Participants were shown nonsense trigrams and asked to recall them after either 3,6,9,12,15 or 18 seconds. During the pause, they were asked to count backwards in threes from a given number…