Assertion: natural experiment | /r/HasProperty | empirical study
Facets:
Source sentences:
text: A natural experiment is an empirical study in which individuals (or clusters of individuals) are exposed to the experimental and control conditions that are determined by nature or by other factors outside the control of the investigators.
text: A natural experiment is an empirical study in which the experimental conditions are determined by nature or by other factors out of the control of the experimenters and yet the treatment assignment process is arguably exogenous.