The nursing research student is reviewing study designs prior to beginning a class assignment. Which statement, made by this study, reflects poor understanding of these designs?
1. I think the one-shot case study design will be best for my study because it controls threats to internal validity.
2. The one-group pretest-posttest design might be quicker to complete, but it is a weak design.
3. If I choose a time-series design, I should plan numerous measurements of my dependent variable to strengthen validity.
4. If I can randomly assign study subjects to my groups, I can use the pretest-posttest control group design.
1
Rationale 1: This design is the weakest of all experimental designs because it does not control for threats to internal validity.
Rationale 2: This design is considered weak.
Rationale 3: This is a true statement.
Rationale 4: This is a true statement.
Global Rationale:
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