Reference no: EM133794390

Question

1. What is the specific design chosen for this research? Why is it the most appropriate design for the purpose of this study? (hint: look carefully at the specific words used in the purpose statement). What are the strengths of this design for answering this question?

2. What are the independent and dependent variables in this study? Are the variables clearly identified and defined in a way that the study could be replicated?

3. Instead of the control group receiving no intervention, the researchers used an attention control intervention. What extraneous effects might this have controlled for?

4. What is the target population for this study? What is the sampling frame? What is the sample?

5. What sampling method was used (probability or non-probability)? How might this sampling approach limit the generalizability of the findings?

6. How does the use of random group assignment compensate for the lack of random sampling?

7. The authors reported large effect sizes for stress (d = 4.99), anxiety (d = 2.37), depressive symptoms (d = 2.55), and job satisfaction (d = 1.05). In your own words, describe what a large effect size means. Does a large effect size mean that a finding is statistically significant?

8. If the intervention had produced only a medium (d = .5) effect, would the sample size be large enough to detect the effect? If not, what sample size would be required in order to have sufficient power to detect a medium effect? What about a small effect (d = 0.2)?