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Everything about External validity
Extent to which the results of a study can be generalized
External validity is the validity of applying the conclusions of a scientific study outside the context of that study. In other words, it is the extent to which the results of a study can generalize or transport to other situations, people, stimuli, and times. Generalizability refers to the applicability of a predefined sample to a broader population while transportability refers to the applicability of one sample to another target population. In contrast, internal validity is the validity of conclusions drawn within the context of a particular study. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: External validityA 5-minute orientation
- Skim a recent paper: Comparing clinical trial population representativeness to real-world populations: an external validity analysis encompassing 43 895 trials and 5 685 738 individuals across 989 unique drugs and 286 conditions in EnglandInfluential work since 2022
- Pick up a classic book: Självkonfrontation via intern television i lärarutbildningenThe most-reprinted book on the subject
- Read the landmark paper: The Concept of External ValidityCited 429 times
- Go sideways: Quasi-experimentA closely related topic
- Go sideways: Internal validityA closely related topic
📖 Definitions
No dictionary entry for this exact phrase.
🏆 Landmark papers (most cited)
The Concept of External Validity
The External Validity of Experiments
The Importance of External Validity
Cross-Sample Comparisons and External Validity
Theory and External Validity
External Validity
Beyond External Validity
External Validity, Generalizability, and Knowledge Utilization
🆕 Influential since 2022
Comparing clinical trial population representativeness to real-world populations: an external validity analysis encompassing 43 895 trials and 5 685 738 individuals across 989 unique drugs and 286 conditions in England
Elements of External Validity: Framework, Design, and Analysis
Machine learning algorithm to predict anterior cruciate ligament revision demonstrates external validity
Assessing the external validity of machine learning-based detection of glaucoma
External Validity and Meta‐Analysis
📚 Books worth reading
- 📕Självkonfrontation via intern television i lärarutbildningenBernhard Bierschenk · 1972
- 📕Självkonfrontation via intern television i lärarutbildningen · 1971
AI-Assisted Medical DiagnosticsMilan Toma · 2025
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
- Quasi-experiment A quasi-experiment is a research design used to estimate the causal impact of an intervention. This research design is aimed at assessing the difference…
- Internal validity Internal validity is the extent to which a piece of evidence supports a claim about cause and effect, within the context of a particular study. It is one…
- Confounding In causal inference, confounding is a form of systematic error (or bias) that can distort estimates of causal effects in observational studies. A confounder…
- Field experiment Field experiments are experiments carried out outside of laboratory settings. They are different from others in that they are conducted in real-world settings…
- Validity (statistics) Validity is the main extent to which a concept, conclusion, or measurement is well-founded and likely corresponds accurately to the real world. The word…
- Experimental psychology Experimental psychology is the work done by those who apply experimental methods to psychological study and the underlying processes. Experimental psychologists…
- Statistical conclusion validity Statistical conclusion validity is the degree to which conclusions about the relationship among variables based on the data are correct or "reasonable"…
- Experiment An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments…