A researcher who studies a fixed group of people over a long period of time is,by definition,using the ________ method.
A)lifespan
B)correlational
C)cross-sectional
D)longitudinal

Name: A researcher who studies a fixed group of people over a long period of time is,by definition,using the ________ method. A)lifespan B)correlational C)cross-sectional D)longitudinal
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Question

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Longitudinal studies gather data from the same participants over an extended period of time.

A Researcher Who Studies a Fixed Group of People Over