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Taking a Broader Perspective: the Problem of External Validity a Researcher

Question 9

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Taking a Broader Perspective: The Problem of External Validity A researcher studying public displays of affection by dating couples observes this behavior in shopping malls, airports, and supermarkets.This illustrates the technique of


A) aggregation over measures.
B) aggregation over situations.
C) aggregation over subjects.
D) aggregation over trials.

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