Sample interview questions: What steps do you take to ensure that research studies have high internal validity and external validity?
Sample answer:
Ensuring Internal Validity
- Control Variables: Identify and control for potential confounding variables that could influence the results, such as demographics, prior knowledge, or environmental factors.
- Randomization: Randomly assign participants to experimental and control groups to reduce bias and increase confidence in causality.
- Replication: Conduct multiple studies to confirm the findings and reduce the likelihood of chance results.
- Pilot Testing: Conduct a preliminary study to identify potential flaws and refine the methodology before launching the main research.
Ensuring External Validity
- Generalizability: Ensure the sample is representative of the population of interest to allow for broad application of the findings.
- Field Experimentation: Conduct studies in real-world settings to enhance the realism and applicability of the results.
- Longitudinal Studies: Follow participants over time to capture changes and trends, increasing the validity of predictions.
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