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Research methods and skills

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Question 22

A biological psychologist investigated the relationship between salivary cortisol levels measured just before sleep and the duration of slow-wave sleep (SWS) obtained during the night.

Table 1: Cortisol levels and slow-wave sleep duration for eight participants

Participant	Salivary cortisol level ( $μg/dL\mu\text{g/dL}$ )	Duration of slow-wave sleep (minutes)
A	0.12	110
B	0.28	85
C	0.05	125
D	0.40	50
E	0.18	100
F	0.35	65
G	0.22	90
H	0.45	40

State the type of relationship shown in the data in Table 1.

[1]

Markscheme

Research methods and skills Questions

A Level
Psychology
Research methods and skills

82 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.

Research methods and skills

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Research methods and skills

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Question 22

A biological psychologist investigated the relationship between salivary cortisol levels measured just before sleep and the duration of slow-wave sleep (SWS) obtained during the night.

Table 1: Cortisol levels and slow-wave sleep duration for eight participants

Participant	Salivary cortisol level ( $μg/dL\mu\text{g/dL}$ )	Duration of slow-wave sleep (minutes)
A	0.12	110
B	0.28	85
C	0.05	125
D	0.40	50
E	0.18	100
F	0.35	65
G	0.22	90
H	0.45	40

State the type of relationship shown in the data in Table 1.

[1]

Markscheme

Research methods and skills Questions

A Level
Psychology
Research methods and skills

82 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.