Which of the following best depicts the pretest-posttest control-group design?
A) A group of participants is pretested on some variable, experiences a treatment, and then is posttested.
B) A group of participants is pretested on some variable, and later they are posttested.
C) A group of participants is randomly assigned to either the treatment or control group.
D) A group of participants is pretested, then randomly assigned to either the treatment or control group, and later is posttested.
Correct Answer:
Verified
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