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.
What is meant by a pilot study? Explain one possible reason why the psychologist decided to conduct a pilot study for this investigation.
What are investigator effects? Suggest one way in which they could have been minimised during the dream interviews.
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