Oscar investigated whether there was a relationship between attitudes to recreational drug use and parts of the personality (id, ego and superego) according to Freud - AQA - A-Level Psychology - Question 7 - 2021 - Paper 1
Question 7
Oscar investigated whether there was a relationship between attitudes to recreational drug use and parts of the personality (id, ego and superego) according to Freud... show full transcript
Worked Solution & Example Answer:Oscar investigated whether there was a relationship between attitudes to recreational drug use and parts of the personality (id, ego and superego) according to Freud - AQA - A-Level Psychology - Question 7 - 2021 - Paper 1
Step 1
Complete Table 1
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Answer
Personality score
Rank 1
Attitude to recreational drug use score
Rank 2
d
d²
2
1
3
1.5
-0.5
0.25
8
6
9
7
-1
1
5
3
6
4
-1
1
9
7
4
2
5
25
6
4.5
7
6
-1.5
2.25
3
2
5
3
-1
1
7
5
8
8
-3
9
1
8
2
5
3
9
4
4
1
4
0
0
9
7.5
4
3.5
4
16
Total: 17.5
Step 2
Calculate Spearman’s rank correlation coefficient
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Answer
To calculate Spearman’s rank correlation coefficient, use the formula:
ρ=1−N(N2−1)6∑d2
Where:
∑d2=17.5
N=8 (number of pairs)
Substituting in:
ρ=1−8(64−1)6×17.5
Calculating yields:
ρ=1−504105≈0.792
Step 3
Using the critical values table for Spearman's rank
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Answer
To determine the lowest level of significance, we refer to the critical values table for Spearman's rank. Since N=8, at a one-tailed hypothesis:
The critical value at P=0.025 is 0.738.
Oscar's calculated value (0.792) exceeds this critical value, indicating a significant result.
