Case Study

Based on the comparison between qualitative and quantitative methods, identify which option represents a qualitative approach and which represents a quantitative approach. Comprehensively explain how the sample size, data type, and analysis goal of each option align with the core characteristics of its respective methodology.

Case context: A developmental psychologist, Dr. Martinez, is studying how retirement affects emotional well-being. She is evaluating two research paths. In Option A, she plans to administer a structured questionnaire to a large group of retired individuals (N=300N = 300), measuring well-being with a numerical scale and using statistical analyses to draw conclusions about the retired population. In Option B, she plans to conduct open-ended interviews with a small group of retirees (N=8N = 8) to gather extensive, unfiltered personal stories, using nonstatistical methods to explore the depth of their subjective experiences.

Question: Based on the comparison between qualitative and quantitative methods, identify which option represents a qualitative approach and which represents a quantitative approach. Comprehensively explain how the sample size, data type, and analysis goal of each option align with the core characteristics of its respective methodology.

Sample answer: Option A represents a quantitative research approach, while Option B represents a qualitative research approach. Option A aligns with quantitative methodology because it starts with a structured measurement on a large sample (N=300N = 300) to collect numerical data, with the goal of using statistical techniques to draw general conclusions about the population. Option B aligns with qualitative methodology because it uses a small sample (N=8N = 8) to collect detailed, unfiltered, nonnumerical interview data, aiming to deeply understand the participant's detailed experiences using nonstatistical techniques instead of seeking broad generalizations.

Key points:

  • Option A is classified as a quantitative research design.
  • Option B is classified as a qualitative research design.
  • Option A's large sample (N=300N = 300) and numerical data support statistical generalization.
  • Option B's small sample (N=8N = 8) and nonnumerical data support in-depth understanding of experiences via nonstatistical techniques.

Rubric: To receive full credit, the answer must: - 3 points: Correctly classify Option A as quantitative and Option B as qualitative. - 3 points: Explain that Option A's large sample size and numerical data match the quantitative goal of using statistical techniques for broad population generalizations. - 4 points: Explain that Option B's small sample size and nonnumerical, unfiltered data match the qualitative goal of using nonstatistical techniques to deeply understand detailed individual experiences.

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Updated 2026-05-26

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Research Methods in Psychology - 4th American Edition @ KPU

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