What could Peterson & Peterson conclude from their research?
Peterson & Peterson concluded that short-term memory has a limited duration of approximately 18 seconds. Furthermore, the results show that if we are unable to rehearse information, it will not be passed to long-term memory, providing further support for the multi-store model and the idea of discrete components.
What was the purpose of the Peterson and Peterson 1959 study?
Peterson and Peterson investigated one of the factors that causes our short-term memory to decay, i.e. why we forget information in our short-term memory. In 1959, they conducted an experiment that revealed how time between remembering something and having to recall it affected the life of a memory.
What research method did Peterson and Peterson use?
After hearing a trigram participants were asked to count backwards in threes or fours from a specified random number until they saw a red light appear (then they recalled the trigram). This is known as the brown peterson technique, and the purpose was to prevent rehearsal.
Who conducted the Peterson and Peterson experiment?
The task is named for two notable experiments published in the 1950s in which it was first documented, the first by John Brown and the second by husband and wife team Lloyd and Margaret Peterson.
Which type of external validity is the Peterson and Peterson study Criticised for lacking?
Furthermore, it could be argued that Peterson and Peterson’s study has low levels of ecological validity. In this study, participants were asked to recall three-letter trigrams, which is unlike anything people would want to memorise in their everyday lives.
Is Peterson and Peterson reductionist?
It could be argued that Peterson and Peterson’s research is a rather reductionist approach towards the study of memory. This means that in an attempt to isolated and study particular casual factors such as verbal rehearsal in STM, some wider picture may have been lost.
Who researched coding in STM?
Peterson and Peterson
Research into duration: STM duration was investigated by Peterson and Peterson (1959). Participants were given a nonsense ‘trigram’ of three syllables, together with a three-digit number (for example, ‘TJF 374’).
How did Peterson and Peterson study the duration of short-term memory quizlet?
Peterson & Peterson used experiments found that short-term memory has limited duration meaning that participants tasked to recall number did better in a 3 second period than they did in an 18 second period because the 18 second period was out of short-term memory and it didn’t allow enough time to rehearse.
Who studied short-term memory?
psychologist Alan D. Baddeley
The study of short-term memory was revolutionized by the experiments of British psychologist Alan D. Baddeley and his colleagues in the 1970s and ’80s. According to their model, short-term or “working memory” consists of at least two storage buffers: one for visuospatial information and another for verbal information.
What type of coding is STM?
Semantic (meaning) Evidence suggests that this is the principle coding system in short-term memory (STM) is acoustic coding. When a person is presented with a list of numbers and letters, they will try to hold them in STM by rehearsing them (verbally).
When Peterson and Peterson demonstrated the decay of short term memory over a delay Why did they ask people to count backward by threes during the delay?
During the pause, they were asked to count backwards in 3’s from a given number. This interference task was prevent rehearsal. The longer the interval delay the less trigrams were recalled.