All of the following statements about quasi-experimental design are true EXCEPT
a. it is more robust than a true experimental design
b. control is not possible
c. randomization is not possible
d. all subjects have some exposure to the independent variable
A
Quasi-experimental designs are intervention studies that lack randomization but the researcher exercises certain controls. A quasi-experimental study might include all subjects who have a certain procedure and they would be tested in a pre/post test design so that the subjects serve as their own controls. In this design, it's not certain whether some other variable than the independent variables caused a change or improvement of the condition. A quasi-experimental design is less robust than a true experimental design. The quasi-experimental design is often used in nursing and behavioral science because random assignment may be unethical or otherwise not possible.
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