Random assignments would be most critical in what type of research?
A. Case study
B. Correlational
C. Descriptive
D. Experimental
Answer:D
Random assignments would be most critical in what type of research?
A. Case study B. Correlational C. Descriptive D. Experimental
Explanation: D) By randomly assigning subjects to treatments and evaluating the treatments, experiments are designed to study cause and effect. Unlike descriptive studies, changes made in an experimental study can be attributed to the treatments introduced, because all other relevant factors are intended to be controlled. In correlational studies, usually only one group of subjects is studied on a variety of factors. A cross-sectional study typically involves several groups of subjects who are then compared on a variety of factors. Such studies are not experimental.