Coding, Capacity And Duration Of Memory

Question 1

Research on coding

Answer 1

Baddeley

Acoustic in STM, semantic in LTM

Question 2

Evaluation for research on coding

Answer 2

Artificial stimuli

Question 3

Research on capacity: Jacobs digit span

Answer 3

Starts at 4 digits for them to remember and then ups the number each time they get it correct. Mean span for digits 9.3 and letters 7.3

Question 4

Evaluation on research for capacity

Answer 4

Lacks validity

Not so many chunks

Question 5

Research on duration: STM

Answer 5

Peterson and Peterson (1959)
24 undergraduate students taking part in 8 trials
Each student given triagram to remember and 3-digit number and asked to count backwards from 3 digit number until told to stop. On each trial were told to stop after certain time. Shorter amount of time meant more correct

Question 6

Evaluation on research on duration

Answer 6

Meaningless stimuli

Higher external validity

Question 7

What 4 different types of groups did Baddeley split them into to test coding?

Answer 7

Group 1- Acoustically similar
Group 2-Acoustically dissimilar
Group 3- semantically similar
Group 4- semantically dissimilar

Question 8

Research into capacity: Miller span of memory and chunking

Answer 8

Noted things come in 7’s (days, sins, musical notes) suggesting span of STM memory is 7ish. Also noted people can recall 5 words as well as 5 letters by chunking

Question 9

Research on duration: LTM

Answer 9

Bahrick et al (1975)
392 participants from America who obtained their yearbook from them or from school
Were tested by; photo-recognition test or free recall where told everyone they remembered