Explain the concept of 'External Validity' in causal inference.
Instruction: Define 'External Validity' and discuss its importance in generalizing the findings of a causal study.
Context: This question tests the candidate's knowledge on the concept of external validity and its role in applying the results of a study to broader contexts.
Updated
Official answer available
Read the opening below, then unlock the full answer and practical guidance.
External validity asks whether a causal result applies to a specified target population, setting, time or implementation beyond the study itself. Internal validity concerns whether the study's causal comparison is credible for the population it actually studied.
For example, a training program tested among volunteers in one office may have a different...