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Explain how the characteristics of a group research design make it suitable for addressing the researcher's three specific goals in this scenario.
Case context: A psychologist is evaluating the effectiveness of a new mindfulness-based program. They expect that the program's overall benefit might be small and difficult to notice in individual participants. They also suspect that the program's success depends on the participants' natural levels of extraversion. Finally, they want to explore how a participant's cultural background relates to their overall response to the program.
Question: Explain how the characteristics of a group research design make it suitable for addressing the researcher's three specific goals in this scenario.
Sample answer: A group research design is suitable because: 1) it is ideal for detecting weak treatment effects, which helps address the subtle, small benefits of the program; 2) it allows the researcher to study interactions between the treatment and specific participant characteristics, which helps determine if success depends on extraversion; and 3) it enables the investigation of independent variables that cannot be directly manipulated, such as the participants' existing extraversion levels and cultural backgrounds.
Key points:
- Detecting weak treatment effects fits the goal of finding small, subtle benefits
- Examining interactions fits the goal of seeing if success depends on extraversion
- Investigating non-manipulable independent variables fits the goal of studying existing extraversion and cultural backgrounds
Rubric: Grading Rubric: - 3 points: The explanation covers all three goals: detecting the weak treatment effects, examining the interaction with participant characteristics (extraversion), and investigating non-manipulable variables (extraversion and culture). - 2 points: The explanation covers two of the three goals. - 1 point: The explanation covers only one of the goals. - 0 points: The response does not address any of the goals correctly using the advantages of group designs.
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Research Methods in Psychology - 4th American Edition @ KPU
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