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Based on the provided case context, explain whether this study qualifies as a true experiment or a non-experimental factorial design. Justify your answer by identifying how the independent variables are treated and what this implies for the study's conclusions.
Case context: A research team is interested in how different coping styles (Problem-focused vs. Emotion-focused) and personality types (Introvert vs. Extrovert) relate to perceived stress levels in college students. They administer surveys to assess participants' pre-existing coping styles and personality types, and then measure their current stress levels using a standardized questionnaire. The team hopes to use these multiple factors to predict stress.
Question: Based on the provided case context, explain whether this study qualifies as a true experiment or a non-experimental factorial design. Justify your answer by identifying how the independent variables are treated and what this implies for the study's conclusions.
Sample answer: This study qualifies as a non-experimental factorial design, not a true experiment. The independent variables, coping style and personality type, are pre-existing participant variables that are merely measured rather than actively manipulated by the researchers. Because all factors are solely measured, the design is correlational, meaning the research team can examine relationships but cannot establish a definitive cause-and-effect relationship between these traits and perceived stress.
Key points:
- Identifies the design as a non-experimental factorial design.
- Explains that the independent variables (coping style, personality type) are pre-existing and measured.
- Notes the absence of active manipulation by the researchers.
- States that the correlational nature prevents definitive cause-and-effect conclusions.
Rubric: Full credit is given when the student correctly diagnoses the design as a non-experimental factorial design, justifies this by explaining that coping style and personality type are measured rather than actively manipulated, and correctly concludes that the study cannot establish causality.
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Research Methods in Psychology - 4th American Edition @ KPU
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