Cognitive Practical
Aim:
To see whether the digit span (out of 10) id effected by age, using 16-17 year olds and 40+ year
olds.
One tailed: Procedure:
There will be a significant increase in the Opportunity sample of the first 20
percentage of people who scored higher in the students in the 6th from common room.
digit span test out of 10 from 16-17 year olds Opportunity sample of the first 20 40+
compared to the percentage from 40+ year years olds in the local shopping centre.
olds. Consent form.
Each participant was tested in a quiet
room. The digits appeared on the screen
Two tailed: 1 digit every 3 seconds.
There will be a significant difference between
The digit span was calculated at the
scores out of 10 on a digit span test from 16-17
last correct sequence.
year olds than the scores out of 10 from 40+
Debrief - fully explained the aims of the
year olds.
experiment.
Results were calculated using a Mann
Null: Whitney U.
There will be no significant difference in the
scores on the digit span test out of 10 from 16-
17 year olds and 40+ year olds; if there is it is
due to chance. State whether the findings of your
cognitive practical for a one tailed
test are significant. (3)
Mann Whitney U:
Ordinal - ranking the digits they got up to. Our calculated value of 120 was less that
Independent groups design - 2 separate the critical value of 138, therefore the
groups one 16-17 year olds and one 40+ year results are significant for a 1 tailed test with
olds. the probability of 0.05. This means that 16-
Observing for a difference between the 2 age 17 year olds did better in their digit span
groups. out of 10 than the 40+ year olds did.
Aim:
To see whether the digit span (out of 10) id effected by age, using 16-17 year olds and 40+ year
olds.
One tailed: Procedure:
There will be a significant increase in the Opportunity sample of the first 20
percentage of people who scored higher in the students in the 6th from common room.
digit span test out of 10 from 16-17 year olds Opportunity sample of the first 20 40+
compared to the percentage from 40+ year years olds in the local shopping centre.
olds. Consent form.
Each participant was tested in a quiet
room. The digits appeared on the screen
Two tailed: 1 digit every 3 seconds.
There will be a significant difference between
The digit span was calculated at the
scores out of 10 on a digit span test from 16-17
last correct sequence.
year olds than the scores out of 10 from 40+
Debrief - fully explained the aims of the
year olds.
experiment.
Results were calculated using a Mann
Null: Whitney U.
There will be no significant difference in the
scores on the digit span test out of 10 from 16-
17 year olds and 40+ year olds; if there is it is
due to chance. State whether the findings of your
cognitive practical for a one tailed
test are significant. (3)
Mann Whitney U:
Ordinal - ranking the digits they got up to. Our calculated value of 120 was less that
Independent groups design - 2 separate the critical value of 138, therefore the
groups one 16-17 year olds and one 40+ year results are significant for a 1 tailed test with
olds. the probability of 0.05. This means that 16-
Observing for a difference between the 2 age 17 year olds did better in their digit span
groups. out of 10 than the 40+ year olds did.
