How do you ensure the reliability and validity of educational experiments conducted in naturalistic settings?

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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