What did Peterson and Peterson do?

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Peterson & Peterson (1959) investigated the duration of short-term memory by conducting a laboratory experiment with a sample of 24 psychology students.

What was the aim of Peterson and Peterson study?

Peterson and Peterson (1959) Aims: To prove that things only stay in short term memory for around 20 seconds and then, if it is not rehearsed, it disappears forever. Procedures: Participants were given sets of trigrams to learn and then tested on their recall. They had to recall them after 3, 6, 9, 12 or 18 seconds.

What is the Brown Peterson task What does it tell us about short-term memory?

The task aims to test the quantity of objects that can be held in working memory while preventing participants from using mnemonics or other memory techniques separate from the working memory to increase recall capacity.

What is short term memory in psychology?

Short Term Memory. Short-term memory (STM) is the second stage of the multi-store memory model proposed by the Atkinson-Shiffrin. The duration of STM seems to be between 15 and 30 seconds, and the capacity about 7 items.

Does short-term memory have a limited duration when rehearsal is prevented?

Short-term memory has a limited duration when rehearsal is prevented. It is thought that this information is lost from short-term memory from trace decay. The results of the study also show the short-term memory is different from long-term memory in terms of duration. Thus supporting the multi-store model of memory.

How is the capacity of short term memory tested?

There are two ways in which capacity is tested, one being span, the other being recency effect. The Magic number 7 (plus or minus two) provides evidence for the capacity of short term memory.

What is Miller’s short term memory theory?

Short Term Memory. Miller’s theory is supported by evidence from various studies, such as Jacobs (1887). He used the digit span test with every letter in the alphabet and numbers apart from “w” and “7” because they had two syllables. He found out that people find it easier to recall numbers rather than letters.