A researcher is interested in the relationship between depression and the loss of a loved one. The individuals of interest are b
ereaved adults and nonbereaved adults. The variables in this study receive no manipulation, and depression is measured in both sets of adults. This is an example of ____________.
In group comparison study, an experiment compares two groups(the beareaved and nonbeareaved adults in the above study) such as in testing the effects of a treatment where a "comparison group" receives either an alternative treatment or no treatment so that it functions as a source of "counterfactual" causal inference for the purpose of the experiment.