Research Design In Counseling, 4th Edition By Paul Heppner – Test Bank

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