Based on the concept of time constraints in experimental design, recall the specific classic opportunistic field settings described where severe time limitations necessitate a between-subjects design. Explain the primary operational reason why researchers in these settings cannot use a within-subjects design.
Question: Based on the concept of time constraints in experimental design, recall the specific classic opportunistic field settings described where severe time limitations necessitate a between-subjects design. Explain the primary operational reason why researchers in these settings cannot use a within-subjects design.
Sample answer: The classic opportunistic field settings described are a doctor’s waiting room and a grocery store line. Researchers cannot use a within-subjects design in these settings because they do not have enough time to test each participant across all experimental conditions, which forces them to assign each person to only a single condition (a between-subjects design).
Key points:
- Identifies doctor's waiting room or grocery store line as classic opportunistic field settings.
- Recognizes that these settings present severe time constraints for testing participants.
- Explains that researchers lack the time required to test each participant across all experimental conditions.
- Concludes that researchers must assign each participant to only a single condition (between-subjects design).
Rubric: To receive full credit, the response must: 1) Identify at least one of the classic opportunistic field settings (doctor's waiting room or grocery store line). 2) State the core limitation: researchers have severe time constraints with participants in these settings. 3) Explain the design choice: because there is not enough time to test each participant in all experimental conditions, they must assign each person to only a single condition.
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Research Methods in Psychology - 4th American Edition @ KPU
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