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Psychology Homework. * Three differences between long term memory and short-term memory are capacity, duration and encoding. Capacity in short term memory is 9 items and duration is 20 seconds if information is not rehearsed. However, both of these in long-term memory are unlimited. Encoding in short term memory is mostly acoustic, that is, we store information as sounds by repeating it over and over to ourselves verbally. Encoding in long-term memory is mainly semantic. This is when we remember information because of the meaning of it. We can also use other codes such as visual, taste, acoustic and smell in long term memory. * George Miller investigated the capacity of short-term memory by using the digit-span technique. He read participants a list of numbers, ranging from four numbers in a set, to ten numbers in a set. He then told participants to write the numbers down after he had finished reading...

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