Sample interview questions: How do you ensure the reliability and validity of educational experiments conducted in naturalistic settings?
Sample answer:
Ensuring Reliability and Validity in Educational Experiments in Naturalistic Settings
Reliability
- Use multiple data sources: Triangulate data collection methods (e.g., observations, interviews, surveys) to minimize bias and enhance reliability.
- Train observers and interviewers: Provide rigorous training to ensure consistent data collection and interpretation.
- Use standardized protocols: Establish clear and detailed instructions for data collection and analysis.
- Analyze inter-rater reliability: Calculate the extent to which different observers or raters agree on their assessments.
Validity
Internal Validity:
- Control for confounding variables: Identify and eliminate potential factors that could bias the results (e.g., participant characteristics, situational factors).
- Use random assignment or matching: Distribute participants into experimental and control groups to minimize selection bias.
- Plan for attrition: Anticipate and address potential dropouts to avoid bias in the final sample.
External Validity:
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