Coding Capacity Duration Flashcards
(15 cards)
AO1 capacity of STM
Jacobs serial digit test
-participants were read a sequence of numbers/letters and asked to read the sequence back in the correct order
-an additional number / letter was added everytime
How do you increase the capacity of the STM
Chunking (Miller) where similarities and patterns between information was easier to recall when chunked together
AO1 duration of STM
Peterson and Peterson
-Lab experiment
-24 students
-participants were asked to remember a trigram and then were asked to count down from a 3 digit number to prevent rehearsal of the information
-After 3,6,9,12,15 and 18 seconds the participants were asked to recall the trigram
AO1 duration of LTM
Bahrick et al
-392 participants from US universities aged 17-78
-Using participants high school year books recall was tested via
-photo recognition and
-free recall (off the top of their heads)
AO1 coding of the STM and LTM
Baddeley
-Participants were given 4 groups to remember
-acoustically similar
-acoustically dissimilar
-semantically similar
-semantically dissimilar
What is the capacity of the STM
5-9 items
what is the coding of the STM
accoustic
Bahricks results
-participants who left sch 14 years ago
-photos-90%
-participants who left 47 years ago
-photo-60%
-The duration of the LTM is unlimited
Peterson and Petersons findings
-3 sec = 80% recall
-18 sec = 3% recall
-duration of STM without rehearsal is 18 sec
-with rehearsal is 18-30sec
-STM lasts 18-30 secs
What is he capacity of LTM
infinite
What is the coding for LTM
semmantic
whats the duration of LTM
infinite
Whats the duration of STM
18-30 secs
Jacobs serial digits test findings
-average no = 9.3
-average letters = 7.3
-capacity = 5-9 items
Baddeley’s findings
-when testing for STM the participants struggled w acoustically similar words the most meaning that the STM is coded acoustically as it disrupts the code
-when testing for LTM the participants struggled most w semantically similar words meaning the LTM is coded semantically as it disrupts the code