Psychology 9-1 GCSE - 2.2.2 - Peterson and Peterson (1959) Short-term retention of individual verbal items: Aims - To investigate the duration of short term memory. To test if information that is not rehearsed is lost quickly from short term memory. Procedure - A lab experiment in which 24 participants had to recall meaningless three consonant syllables. They were presented one at a time and had to be recalled after intervals of 3,6,9,12 or 18 seconds. They were also asked to count backwards in three or fours to prevent rehearsal. Results - There was a rapid increase in forgetting as the time delay increased. Conclusions - Short-term memory has a limited duration of about 18 seconds when rehersal is prevented. If a person is not allowed to rehearse the information will not transfer to their long term memory store. Strengths - It supports the multistore model of memory ( Atkinson and Shiffrin 1969 ). Results are easily proven t...
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