Duration of Memory Studies: Peterson and Peterson Flashcards Preview

Psychology: Memory (AQA) > Duration of Memory Studies: Peterson and Peterson > Flashcards

Flashcards in Duration of Memory Studies: Peterson and Peterson Deck (15)
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1
Q

Method

A

Participants were shown nonsense trigrams and asked to recall them after either 3, 6, 12, 15 or 18 seconds

2
Q

How long were the trigrams shown for?

A

3, 6, 12, 15 or 18 seconds

3
Q

Method: What were participants asked to do after seeing the trigrams?

A

Count backwards in threes from a given number

4
Q

Method: counting backwards from a given number was a…

A

Interference task

5
Q

Method: why were the participants given an interference task?

A

So they wouldn’t recall the numbers internally

6
Q

Results: 3 seconds

A

Participants could recall about 80% correctly

7
Q

Results: 18 seconds

A

Only 10% could be correctly recalled

8
Q

conclusions

A

when rehearsal is prevented, very little can stay in STM for longer then about 18 seconds

9
Q

Evaluation: type of study

A

laboratory study

10
Q

Evaluation: Reliability

A

because it was a laboratory study the variables can be tightly controlled

11
Q

Evaluation: Ecological validity

A

nonsense trigrams are artificial, so the study lacks ecological validity

12
Q

Evaluation: Real life

A

meaningful or real-life memories may last longer in short term memory

13
Q

Evaluation: Stimulus

A

the duration of short term memory may depend on the type of stimulus

14
Q

Evaluation: Trigram

A

due to the participants each seeing different trigrams, this could have led to confusion meaning that the first trigram was the only realistic trial

15
Q

What did they study?

A

investigated short term memory using trigrams