Definition of "nonexperimental" [nonexperimental]

• Not experimental (of a research method). (adjective)

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• "Nonetheless, nonexperimental research cannot exclude the potential effects of self-selection, that is, the possibility that some unsuspected factor perhaps even something genetic induces both religiosity and neighborliness, producing a spurious correlation, so that simply forcing people to attend church more often would not make them more neighborly."
• "What's not clear is how much a similar nonexperimental net-zero house would cost."
• "How much confidence, then, should we have in nonexperimental studies?"