The primary difference between natural experiments and standard experiments is that natural experiments

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Quizplus · Accepted Answer

The best choice is D. The primary difference between natural experiments and standard experiments is that natural experiments typically do not involve random assignment of individuals, while standard experiments do. Additionally, natural experiments occur under natural conditions, without manipulation of an independent variable by the experimenter, while standard experiments involve intentional manipulation of an independent variable to observe its effects on a dependent variable.

The Primary Difference Between Natural Experiments and Standard Experiments Is