Compare and contrast quasi-experimental and nonexperimental designs.
What will be an ideal response?
Ans: Varies.
Quasi-experimental research designs and nonexperimental research designs are alike in that neither allows for inferences of causation, and neither allows for manipulation of the independent variable nor for random assignment to groups. The two can be distinguished in part through the degree of control the researchers have in each design. In quasi-experimental designs, researchers examine groups that represent different levels of the independent variable. In nonexperimental designs, however, researchers have even less control. Ultimately, quasi-experimental designs tend to have higher internal validity because there’s more opportunity for researchers to control for confounds than in nonexperimental designs.
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