Experimental Research Designs

Jones & Bartlett Learning, LLC. NOT FOR SALE OR DISTRIBUTION. 5. C HAPTER. Experimental Research Designs If there is an ideal against which all quantitative Designs are compared, it is the true experiment. In health-related Research , including studies of screening tests, diagnostics, prevention, and therapeutic interventions (DeMets & Fisher, 2008), this takes the form of the randomized clinical trial (RCT). There are many instances, however, in which employ- ing the Experimental design is difficult or impossible, premature, or unethical. For this reason, there are a variety of what are called quasi - Experimental Designs , as well as descriptive and observational Designs . The Experimental and quasi - Experimental Designs , along with their strengths and drawbacks, are discussed in this chapter. Experimental design . Regular use of control groups in psychosocial and educational Research dates back to about 1908.

ing the experimental design is difficult or impossible, premature, or unethical. For this reason, there are a variety of what are called quasi-experimental designs, as well as descriptive and observational designs. The experimental and quasi-experimental designs, along with their strengths and drawbacks, are discussed in this chapter.

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