Memory Flashcards
Who made the WMM?
Baddeley and Hitch 1974
What is the research support for coding (MSM)
Baddeley
Acoustically similar- hard (STM)
Acoustically different
Semantically similar- hard (LTM)
Semantically different
What is the research support for capacity (MSM)?
Digit span Joseph jacobs (1887)
Inc of 1 number per correct ans (9.3)
Letter span
7.3
George killer (1956)
Chunking 7+-2 (daily observations)
What study was done to conclude that STM & LTM are different?
Words at the start and end of a list are easier to recall with middle being displaced, (primacy recency effect)
What study was done to conclude the capacity and duration of SR?
12 letter grid flashed up for 1/20th of a second, when asked participants could recite one row 75% of the time however could not write all of them down, forgotten too quickly
What study was done to examine the coding for STM<M
Baddeley
Acoustically similar harder STM
semantically different harder after some time LTM
Capacity of LTM?
Wagenaar, diary of 2400 events over 6 years, could recall after one year 75% after 5 years 45%
What is the duration of LTM?
After 15 years 90% after 48 years 80%, bahrick
Research support for types of LTM
Tuvuling PET brain scans, different marts of prefrontal cortex for semantic& episodic
Clive wearing
Only procedural
However episodic memory becomes semantic after time
Research support for WMM?
•Baddeley dual task experiment
•KF selective impairment to STM
•Fmri scans, integrated (prefrontal) or separated (posterior regions) spatial info
•Harder to recite long words than short, PL limited capacity
•More accurate than MSM, active processor