Random assignment to two alternative treatments removes the possible value of a control group regardless of the results.
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Q7: What should we conclude regarding the effectiveness
Q8: What should we conclude regarding the effectiveness
Q9: Random assignment with a very large sample
Q10: Random assignment always removes the need for
Q11: The posttest-only control group design is always
Q13: The classic pretest-posttest control group design controls
Q14: Extremely obtrusive observation can be a fatal
Q15: Some forms of research reactivity can make
Q16: Treatment diffusion can make a very effective
Q17: A lack of treatment fidelity can make
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