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Case Study

Diagnose which research design possesses higher mundane realism, and explain how this methodological choice impacts the study's external validity based on the core principles of the concept.

Case context: A research team is designing a study to investigate consumer behavior. They propose two different methodologies. Design A involves bringing participants into a university laboratory, having them sit at a computer, and asking them to click on digital images of products they might buy. Design B involves observing ordinary shoppers as they navigate the aisles and make their typical purchases inside a functioning local grocery store.

Question: Diagnose which research design possesses higher mundane realism, and explain how this methodological choice impacts the study's external validity based on the core principles of the concept.

Sample answer: Design B possesses higher mundane realism because its conditions mirror a typical real-world environment. The setting (a functioning grocery store) and the experiences (ordinary shoppers making typical purchases) closely resemble the actual, everyday situations the researchers are attempting to study. Because Design B accurately mirrors the real world, this methodology inherently strengthens the study's external validity compared to the artificial laboratory setting of Design A.

Key points:

  • Design B demonstrates higher mundane realism.
  • Design B's setting and participant experiences resemble the actual, everyday situations being studied.
  • Mirroring a typical real-world environment inherently strengthens the study's external validity.

Rubric: The student should correctly identify Design B as having higher mundane realism and explain that because it mirrors a real-world environment, it inherently strengthens external validity.

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Updated 2026-05-27

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Research Methods in Psychology - 4th American Edition @ KPU

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