Matching of test subjects to experimental groups is only conducted when randomisation is not possible.

Question

Quizplus · Accepted Answer

Matching of test subjects to experimental groups can also be conducted when randomisation is possible, but the researcher wants to ensure that certain variables are balanced across groups. However, if randomisation is possible, it is considered the best method for minimizing bias and ensuring groups are comparable at the start of the experiment.

Matching of Test Subjects to Experimental Groups Is Only Conducted