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Table 2 Percentage of friendly and aggressive social interactions in dreams reported bymales and females

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Table 2 Percentage of friendly and aggressive social interactions in dreams reported bymales and females

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A total of 375 dreams reported by males included social interaction. Use the data in Table 2 to calculate how many of these dreams reported by males were classified as aggressive. Show your workings. (2 Marks)

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The psychologist was interested in finding out whether dream themes differed between males and females, particularly in terms of social interaction. She decided to conduct a pilot study. Twenty undergraduate students (8 male and 12 female) volunteered for the study. For a six-week period the students were interviewed at 9 am each morning when they arrived at university. Interviewers, who did not know the purpose of the study, carried out and recorded the dream interviews.

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The psychologist was interested in finding out whether dream themes differed between males and females, particularly in terms of social interaction. She decided to conduct a pilot study. Twenty undergraduate students (8 male and 12 female) volunteered for the study. For a six-week period the students were interviewed at 9 am each morning when they arrived at university. Interviewers, who did not know the purpose of the study, carried out and recorded the dream interviews.

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What is meant by a pilot study? Explain one possible reason why the psychologist decided to conduct a pilot study for this investigation.  (3 Marks)