CHAPTER 11: True Experimental Designs: The Power of Between-Groups and Within-Subjects Designs
True/False Questions
1. A major identifying feature of between-groups design is the random assignment of participants to different treatment conditions.
Answer: True
2. In all within-subjects designs, the order in which treatments are delivered is the same for all participants.
Answer: False
3. A researcher must have an entire sample identified and available at the beginning of an investigation.
Answer: False
4. Among the two types of between-groups designs, it is easier to protect the confidentiality of responses of the participants in the posttest-only control group design.
Answer: True
5. Participants in a placebo control group are led to believe that the treatment they are receiving is as effective as that being received by the real control group.
Answer: True
6. Factorial designs are used when two or more independent variables are employed simultaneously to study their independent and interactive effects on a dependent variable.
Answer: True
7. In the context of dependent sample designs, all the extraneous variables should be included in the study as independent variables in order to determine their effects.
Answer: False
8. A researcher using a crossover design can safely conclude that the treatment which produces the greatest change in the value of the dependent variable is the most effective of the ones being studied.
Answer: False
9. Counterbalanced crossover designs help researchers control threats to internal validity due to order effects.
Answer: True
10. In general, a researcher can use half the number of participants in a counterbalanced crossover design and still retain the same statistical power as in the between-subjects design.
Answer: True
Reviews
There are no reviews yet.