Supporting Research For Multi Store Model

Question 1

What did miller do in 1956?

Answer 1

-hold about seven items in short-term memory range between five and nine
-Items can be in chunks and the chunks impose a rhythm which makes it easier to recall
-if chunks are meaningful capacity may be improved
-chunking information increases capacity of short-term memory

Question 2

What did Peterson and Peterson do in 1959?

Answer 2

-interference task to prevent rehearsal
-Required to remember a single trigram (e.g. Bgn = three constonants for 3,9,12 seconds)
-trigram was read to participants and then they were given a number which they had to count back from in threes (interference)
-correct Recall from the trigram was likely after a short interval,but performance declined after 15 to 18 seconds
-short-term memory has limited duration

Question 3

What did barrack et al do (1975)?

Answer 3

-memory tests on the names and faces of students in participants high school yearbook
-400 participants age 17 to 74
-Identification of names and faces was 90% accurate within 15 years of leaving school
-70 -80% =48 years after leaving school
-Long-term memory has a potentially unlimited duration

Question 4

What did Brady et al do (2008)?

Answer 4

-show participants 2500 objects over 5 1/2 hours
-Pairs of objects and asked to identify which of the two they seen before
-An object was paired with a very different object identification was 92%
-Object prepared with similar object identification was 88%
-Long time memory works best with semantically different items

Question 5

What did Jacob’s do ( 1887)?

Answer 5

-experiment using a digit span test to examine capacity of short-term memory for numbers and letters
-443 females from North London collegiate school
-Participants had to repeat a string of numbers or letters in the same order and the number of them was gradually increased until they could no longer recall
-7.3 letters and 9.3 were recalled - supports Miller