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The most obvious benefit of specialization and trade is that they allow us to
Matched Design
A research design that matches the experimental participants with control participants who are similar on key characteristics.
Epidemiological
Relating to the study of how disease rates vary among different population groups to identify patterns, causes, and control health problems.
Experimental
Referring to a method of investigation in the sciences and social sciences in which variables are manipulated to observe and measure effects on a particular outcome.
Natural
Pertaining to or derived from the physical world and the processes in it.
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