Duration

Question 1

What is duration ?

Answer 1

Duration is the period of time information can last in the memory stores

Question 2

What is the experiment for duration in sensory register?

Answer 2

Participants are shown a grid of numbers and words for 50 milliseconds. They were divided into two groups.
Group one - asked to recall all 12 items
Group two- participants are asked to recall one row
Findings
42% were recalled correctly - G1
75% were recalled correctly - G2
Group one recall was poor because its hard to recall items that disappear so fast
This shows that the duration is short

Question 3

What is the experiment of the duration of short term memory? Peterson Peterson

Answer 3

Students were given a trigram which is a 3 digit number they need to remember.
And they were told to count down from a certain number to prevent rehearsal
The amount they had to count down by increased and affective recall decreased .
This shows us that stm has limited duration

Question 4

What is the experiment for duration in long term memory?

Answer 4

Bahrick at al -
Got participants who finished school 15 years ago and 48 years ago and told them to recall who was in their class with and without photos
With photos 15 - 90% accurate
Without photos 15- 70%
With photos 48- 60%
Without photos 48- 30%

Question 5

What is a strength of bahrick experiment where he told participants to recall year book?

Answer 5

One strength is that he used meaningful memories which were represented in everyday life
This increases internal validity as these results can be generalised to real life situations

Question 6

What’s one weakness of the Peterson and Peterson experiment?

Answer 6

The use of artificial stimuli and memories decreases internal validity because its not part of everyday life therefore can’t be generalised .