Examlex
A key obstacle to declining birth rates is
Randomization
The process of making choices or selecting participants for a study randomly to eliminate bias and ensure impartiality.
Experimental Group
In research, a group of subjects who are exposed to the variable under study to assess its effect, as opposed to a control group.
Control Group
In experimental research, a group of subjects that does not receive the experimental treatment, allowing for a comparison to assess the effect of the treatment.
Operationalization
The process of defining measurement criteria for abstract concepts to enable their empirical, quantitative measurement.
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