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Random and Natural Experiments: Some New Techniques in Economic Development
random experiment (Sometimes referred to as a randomized experiment.) A technique in which outcomes of specific interventions are determined by using the intervention in a randomly selected subset of a sample and then comparing outcomes from the exposed and control group.
natural experiment Selection of a control versus experimental group in testing the outcome of an intervention is made as a result of an exogenous event outside the experiment itself and unrelated to it.