Very short, less than 18 seconds when verbal rehearsal is prevented
6 of 19
Who proposed this and when?
Peterson and Peterson, 1959
7 of 19
What did the study involve?
24 students, TXH 512 - had to count backwards from number at the different times (3,6,9,12,15,18 seconds) and then try remember the letters
8 of 19
What were the findings of this study?
90% were correct over 3 seconds, 2% were correct over 18 seconds which shows that STM has a short duration, when verbal rehearsal is prevented.
9 of 19
What is coding?
The way information can be changed to be stored in the memory
10 of 19
What are the two types of coding?
Semantic And Acoustic coding
11 of 19
What is acoustic coding?
Cat, Cab, Can, Cad, Cap - sound similar
12 of 19
What is semantic coding?
Great, large, big, huge, broad - meaning is similar
13 of 19
Who was the researcher for this and when?
Baddeley, 1966
14 of 19
What did he find?
Participants had difficulty remembering acoustically similar words in STM but not LTM. Participants also found it difficult to remember semantically similar words in LTM but not STM.
15 of 19
EVALUATION: Capacity of STM may be limited
STM may be limited to just 4 chunks, and therefore may not be as extensive as first thought.
16 of 19
Who proposed this and when?
Cowan, 2001
17 of 19
EVALUATION: testing STM was artificial
The research was all meaningless information, so therefore has a low ecological validity
Comments
No comments have yet been made