When an evaluator recognizes a potential threat to the internal validity of an evaluation,
A) it may be impossible to control for it short of randomization.
B) correlational designs are needed.
C) using just one group would permit the threat to be ignored.
D) a pretest/posttest design can be used.
Correct Answer:
Verified
Q1: Although some quasi-experimental designs are fairly effective
Q2: Whenever preexisting, intact groups are used for
Q4: A randomized experiment
A) cannot be a good
Q5: Pretests are recommended even when the evaluation
Q6: The use of pretests in an experimental
Q7: Service providers sometimes object to random assignment
Q8: The use of pretests with an experimental
Q9: A good approach to interpretation when a
Q10: When determining the costs of a valid,
Q11: An evaluation that _ is a waste
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