Features of SR, STM an LTM Flashcards
Who researched the duration of sensory register?
Walsh and Thompson
What researched the coding of the sensory register?
Crowder
Who researched the capacity of STM?
Jacobs
Who researched the duration of the STM?
Peterson and Peterson
Who researched the coding of the STM?
Baddeley
How do you research the capacity of the sensory register?
Flashing a 3x4 grid of letters on a screen and the participants recall one row.
Who researched the capacity of the sensory register?
Sperling
What was the findings of Spelings experiment?
The capacity of the sensory register is quite large
What were the findings of Walsh and Thompson’s experiment?
The iconic store has an average duration of 500 milliseconds which decreases as you get older
What was the conclusion of Walsh and Thompson’s experiment?
The duration of the sensory memories is limited and dependant on age
What did Crowder find out in his experiment?
The sensory register retains information for a few seconds in the iconic store but for two or three seconds in the echoic store
What was the conclusion of the experiment done by Crowder?
The sensory information is coded into different sensory stores
Who researched the capacity of long term memory?
Anokhin
Who researched the duration of long term memory?
Bahrick
Who researched the coding of long term memory?
Baddeley
What method did Jacobs use to research short term memory?
The digit span technique. This is when participants repeat a string of digits that get longer each time
What was Jacobs findings?
People could recall and average of 5-9 digits
What was the conclusion to Jacobs experiment?
The short term memory has a limited capacity and the new information is displaced by the old
What method did Peterson and Peterson use to research the duration of short term memory?
The participants were given a trigram of three constants. They had to count back in threes from a large number and then they had to recall the trigram in three second intervals
What did Peterson and Peterson find out from their experiment?
As the time interval increased less participants recalled the correct trigram
What did Peterson and Peterson conclude?
The information in our short term memory is easily lost if we do by rehearse it
How did Baddeley research the coding of short term memory?
He gave them two list of words. One was acoustically similar and one was acoustically dissimilar.
What did Baddeley find out in his experiment into short term memory?
Participants that has acoustically similar words performed worse than participants with acoustically dissimilar words
What did Baddeley conclude about short term memory?
Short term memory is coded acoustically
What did Anokhin find out about the capacity of long term memory?
The number of possible neuronal connections in the human brain is 1 followed by 10.5 million km of noughts
What did Anonkin conclude?
No human that exists can use all of their potential brain capacity therefore long term memory is unlimited
What method did Bahrick use to research the duration of long term memory?
He gave 400 participants aged 17 to 74 a free recall test, a photo recognition test and a name recognition test
What findings did Bahrick receive from his experiment?
After 15 years the recognition was 90% and the free recall was 60%. After 48 years the recognition was 80% and the free recall was 30%
What did Bahrick conclude from his experiment?
We can store memory for a life time in the long term memory but we can remember it better when we are given cues
What was Baddeleys method for researching coding in the long term memory?
Participants were given a list of semantically similar and a list of words that were semantically dissimilar and they were given a 20 minute interval before recall
What did Baddeley find about coding in the long term memory?
The similar meaning words were poorly recalled compared to the words with a distinct meaning
What was concluded from Baddeleys experiment about coding in the long term memory?
Long term memory is mainly encoded semantically
Which experiments are a lab experiments?
Sperling, Jacobs, Petersons and Petersons, Baddeleys(LTM and STM) and Anokhin
Which experiments are not a lab experiment?
Walsh and Thompson, Crowder and Bahrick
Which experiment does not need an evaluation?
Anokhin
