Hannah has always been drawn to the saying "Absence makes the heart grow fonder," and she decides that this saying will be incorporated into her research project.Hannah is trying to define "absence" in a way that can be empirically tested.She is attempting to find an appropriate:

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Quizplus · Accepted Answer

Hannah is trying to define "absence" in a way that can be empirically tested, which requires an operational definition. An operational definition clarifies the meaning of a concept or variable by specifying the procedures used to measure or manipulate it, making it possible to test hypotheses about the concept or variable. The other answer choices are not relevant to this situation; a hypothesis is a testable prediction about the relationship between variables, a double-blind study is an experimental design where neither the participants nor the experimenters know who is receiving the treatment or placebo, and a theory is a well-supported explanation for a set of phenomena.

Hannah Has Always Been Drawn to the Saying "Absence Makes