A Researcher Measures the Dependent Variable in an Interventional Group

A researcher measures the dependent variable in an interventional group of subjects both before and after an intervention. The researcher also measures the same dependent variable in a non-interventional group, at the same two points in time. The groups are not randomly assigned. What kind of design is this?

A) One-group pretest-posttest design
B) Factorial design
C) Pretest-posttest design with a comparison group
D) Time series design with nonrandom control group

Correct Answer:

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