Cambridge International AS Level · Psychology (9990)

Dement and Kleitman (sleep and dreams): Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Dement and Kleitman (sleep and dreams).

10 questions24 marksFree, no account

Question 1

1 mark

According to Dement and Kleitman, what was the average (mean) duration of the interval between consecutive periods of REM sleep across all participants?

Question 2

1 mark

In the Dement and Kleitman study, when participants were woken up 15 minutes after the onset of REM sleep, how many were generally correct in their estimation of the dream's duration?

Question 3

1 mark

How did Dement and Kleitman explain the rare instances where participants provided detailed dream reports when woken during NREM sleep?

Question 4

1 mark

Which of the following was a quantitative finding in the Dement and Kleitman study regarding the occurrence of dreaming?

Question 5

1 mark

In the Dement and Kleitman study, when participants were awoken during NREM sleep, which of the following best describes the most frequent nature of their reports?

Question 6

2 marks

Outline one way in which the Dement and Kleitman study followed the ethical guideline of confidentiality. [2]

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Question 7

3 marks

Describe the sampling method used in Dement and Kleitman (sleep and dreams) and explain one weakness of using this method in the context of this specific study. [3]

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Question 8

5 marks

In Dement and Kleitman, the researchers found a positive correlation between the duration of REM sleep and the number of words in a participant's dream narrative. How does this finding specifically enhance the objective measurement of dreaming within a biological framework?

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Question 9

4 marks

In Dement and Kleitman (sleep and dreams), participants were woken up to test the relationship between eye movement patterns and dream content.

(a) Identify two different eye movement patterns observed by the researchers. [2]

(b) For one of the patterns identified in (a), describe the specific dream content reported by the participant. [2]

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Question 10

5 marks

In the study by Dement and Kleitman (sleep and dreams), the researchers investigated the relationship between the duration of REM sleep and the estimation of dream length.

(a) Describe the research design used specifically to test if participants could accurately estimate whether they had been dreaming for 5 or 15 minutes. [2]

(b) State the quantitative findings for the accuracy of these estimations for both the 5-minute and 15-minute conditions. [3]

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