Giving one group of subjects an experimental treatment and then informally observing the effects without a control group is best described as:

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Quizplus · Accepted Answer

This approach is best described as exploratory because it involves observing the effects of an experimental treatment without a control group, which is a preliminary step in determining whether the treatment is effective and should be studied further. It is not correlational because it involves manipulating an independent variable rather than simply measuring variables and discovering relationships between them. It is not factorial because it does not involve manipulating multiple independent variables. It is not single-subject because it does not involve studying a single subject over time.

Giving One Group of Subjects an Experimental Treatment and Then