O'Malley sits in the corner of a classroom observing children at play. Which of the following statements is false?
A. O'Malley has to make sure that his presence doesn't affect the behavior of the children.
B. O'Malley might be obtaining a more realistic view of how children play by observing them in their natural environment.
C. If O'Malley expects to see a certain behavior he may unintentionally bias the study.
D. O'Malley has random assignment working in his favor.
Answer: D
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