Who carried out research on Coding?
Baddley
Explain the procedure for investigating how we code information in our STM?
-ppt were shown 4 categories
-acoustically sim/dis and semantically sim/dis
-after each they were asked to recall the list in the correct order
What was Baddley’s findings for how the STM codes?
More mistakes were made on acoustically similar
Suggests the STM codes accoustically
Explain the procedure for how the LTM codes?
-ppt were shown 4 categories of acoutsically sim/dis and semantically sim and dis
-20 mins after each presentation they were asked to immediately recall the list of words in teh correct order
what did Baddley find and conclude in his research for the LTM?
-made more mistakes in the semantically similar list of words
-suggests the LTM codes semantically
Who carried out Research on the Capacity of the STM?
Miller
What was the procedure to investiage the capacity of the STM?
-used digit span technique
-gave a string of unrelated digits which increased by one each time
-it was measures until they couldn’t remember number in the same sequence
WHat was the findings of investigation into capacity of the STM?
ppt were able to remember 5-9 items and if they were in chunks
capacity of the STM limites and that more can be remembered if there placed in meaningful chunks
Who did research on the capacity of the STM?
Peterson and Peterson
What was the procedure for research into the capacity of the STM?
-given a consonant trigram
-given a 3 digit number and asked to count backwards to prevent rehearsal
-stopped at time intervals and tehn asked to recall
What did research in to the STM capacity find and conclude?
3 secs 80 after 18 10
therefore if info isnt rehearse it lasts 18-30
Who did research into the duration of the LTM?
Bahrick
What was the procedure of research into the capacity of the LTM?
-392 american graduates
-17 74
-condition name all former class mates using a yearbook pictures
-condition 2 without photo
What was the findings of research in to LTM capacity?
con 1 70
con 2 30
certain memories last a lifetime
What are the evaluations overall?
Lacks mundane realism
High control over extraneous variable
high reliability
What is the evaluation of lacks mundane realism?
-the task was artificial
-difficult to generalise the findings to real life examples
-does not reflect real life memory activities where what we remmeber is meaningful
-lowers the EV
What is High control over extranous variables?
-carried out in a controlled setting
-e.g
-thus means more likely to establish cause and effect between the IV and DV
-increase IV
What is high reliability?
-carried out in controlled environment
-therefore research cannot be repeated in the same conditions
-to check for consistent results
-increasing the IV
