Memory Flashcards
Describe the Peterson and Peterson study
Aim - To investigate the duration of short-term memory
Recall triagrams at intervals of 3 sec to 18 sec
Lab
24 psychology students
Use of Peterson technique
Found that increasing retention intervals decreased the accuracy of recall of consonant + Short-term memory has a limited duration (of about 18 seconds) when rehearsal is prevented. syllables
80% recall after 3 sec
50% after 6 sec
10% after 18 sec
What is the Peterson technique?
Where participants are asked to count backward in threes or fours from a specified random digit number until they saw a red light appear
Used to prevent rehearsal
How many ppts took part in Bahricks study?
392
Who participated in Bahricks study?
392 from American state Ohio
17-34 years old
Summarise Bahricks study?
The
duration of LTM is unlimited, as shown by Bahrick et al (1975), who found that photo recognition of
graduating classmates of the 396 participants decreased from 90% to 70% between 15 years and
46 years of graduating.
What 3 tests did Bahrick use to test memory recall?
Free call - ppts asked to list the names of their classmates with no prompts or material
Photo recognition - Name classmates from photos from school yearbook
Name recognition - ppts asked to match photo to name
