9.2 Studies

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Question 11

Siffre lived in a cave with no daylight or clocks. He telephoned the surface team when he woke and when he felt sleepy. The calls were kept short, the team did not tell him the time, and the lamps were switched on or off in response to his calls.

Explain how this procedure allowed Siffre's free-running sleep–wake cycle to be studied.

[2]

9.2 Studies

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

Question 11

Siffre lived in a cave with no daylight or clocks. He telephoned the surface team when he woke and when he felt sleepy. The calls were kept short, the team did not tell him the time, and the lamps were switched on or off in response to his calls.

Explain how this procedure allowed Siffre's free-running sleep–wake cycle to be studied.

[2]

9.2 Studies

Question 11

Markscheme

9.2 Studies

Question 11

Markscheme

9.2 Studies

Question 11

9.2 Studies Questions

9.2 Studies

Question 11

9.2 Studies Questions