coding, capacity and duration

Question 1

what is the encoding of sensory model

Answer 1

raw/ uncoded

Question 2

what is the encoding of STM

Answer 2

acoustically

Question 3

what is the encoding of LTM

Answer 3

semantically

Question 4

what is research of STM encoding

Answer 4

Baddeley
- 1 condition all words sound same
- 2 condition random words
- better recall in 2 due to acoustic confusion

Question 5

what is the research of LTM encoding

Answer 5

Baddeley
- semantically similar words or random
- timed delay
- better recall for random due to semantic confusion

Question 6

what is the capacity of sensory model

Answer 6

attention

Question 7

what is the capacity of STM

Answer 7

7 (+/-2)

Question 8

what is the capacity of LTM

Answer 8

unlimited

Question 9

what is research on capacity of STM

Answer 9

Miller
- 4 letters shown and recall
- if correct up to 5 then 6 etc
- pps remember 7 digits on average

Question 10

what is the duration of sensory model

Answer 10

up to half a second

Question 11

what is the duration of STM

Answer 11

18-30 seconds

Question 12

what is the duration of LTM

Answer 12

lifetime

Question 13

what is the research of duration of STM

Answer 13

Peterson and Peterson
- showed ups trigrams
- count back in 3s from 300 duration from 3 sec to 18 seconds
- longer the interval delay = worse recall

Question 14

what is the research of duration of LTM

Answer 14

Bahrick
- 400 pps age 17-74
- free recall of names from highschool
- second condition is pictures and recall
- better in assisted recall

Question 15

Strengths

Answer 15

1) Bahricks study had high external validity = high school pictures already semantically coded

Question 16

weaknesses

Answer 16

1) millers research was conducted long time ago - less control
2) peterson and petersons research lacks ecological validity
3) peterson and peterson lacks low external validity due to distracter task - studying capacity instead