multi store memory: research

Question 1

badelley coding research

Answer 1

procedure:
75ps in 4 groups each with different word list: · acoustically or semantically similar or dissimilar had to recall words in correct order straight away and 20 mins later

findings;
STM- Ps with similar acoustic words had worst performance (10% recall) whilst dissimilar had 60-80%.
LTM- Ps with semantically similar words had worst recall of 5.5% whilst recall of dissimilar was between 70-85%.

Question 2

petersen and petersen (duration STM)

Answer 2

procedure: 24 Ps had to recall trigrams whilst counting backwards and were told to stop counting every few seconds.
findings: After 3 seconds recall was 80% but after 18 seconds it was 10%.

Question 3

miller (capacity STM)

Answer 3

procedure: Literature review of published investigation into perception from 1930-50s
findings: Span of immediate memory is 7 (+/- 2) items. Information can be chunked together to improve recall.

Question 4

glanzer and cunitz:

Answer 4

procedure: Ps asked to learn list of words that varied in length and recall them in any order with each word presented for 1-2 secs
findings: Words presented first of last were recalled more and middle ones forgotten- serial position effect

Question 5

bahrick

Answer 5

procedure: 400 Ps (aged 17-74) tested on memory of former classmates
findings: Those who left school in last 15 yrs. recalled 90% and those left in last 48 years recalled 70%

Question 6

HM

Answer 6

procedure: Suffered severe amnesia following surgery to help amnesia where he had large portions of his temporal lobe removed
findings: Unable to recall memories from LTM but STM has normal capacity and duration

Question 7

KF

Answer 7

procedure: Suffered severe brain damage after motorbike accident.
findings: No ability to form STMs but only for verbal info as he could remember visual info.

Question 8

Clive Wearing

Answer 8

procedure: Suffers retrograde amnesia after a viral infection caused brain damage.
findings: Remembers little of his past and greets his wife joyously every time he sees her as if he hasn’t seen her in years but still recalls how to play piano. Lost episodic memory but not semantic memory.