1. "There's a natural experiment that goes on in every culture, every day. 2. Some authors distinguish between a natural experiment and a " quasi-experiment ". 3. *What you are looking for is a specific type of Natural experiment . 4. A natural experiment reveals the prevalence of one kind of unwarranted optimism. 5. Variants of the subject outside such formal confines include natural and quasi-natural experiments . 6. Therefore, this exposure has been recognized as being a natural experiment . 7. American economic history since World War II also provides a natural experiment about taxation. 8. "Natural experiments " are a different type of quasi experiment design used by researchers. 9. Econometricians often seek illuminating natural experiments in the absence of evidence from controlled experiments. 10. Thus, the observations of postglacial rebound provide a natural experiment to measure mantle rheology.
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