Evaluating Design Choice and Threats to Validity in a Quasi-Experimental Design.

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One critical area of evaluation in the use of the quasi-experimental research design has to do with the feasibility that it offers (Rodchua, 2009). This is because the application of quasi-experimental design does not often follow any rigid principles in its application. Because of this, there is much time to undertake the design without thinking of the need to follow strict bureaucracies. It is for this reason that quasi-experimental design has often been attributed to social science researches where researchers want to avoid time and logistical constraints.

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Author’s rationale for the design choice

With the quasi-experimental design, however, all that the researcher needed to do was to use a comparison group, without the need to employing the use of an experimental group: a situation that would have brought about the need for a posttest at the end of the given study (Cheng, 2009).

Types of validity presented

The choice of quasi-experimental design brought about two major types of validity, which were external validity and internal validity. With reference to external validity, it could be said that because quasi-experimental designs deal with real-world scenarios, it is often easier to guarantee external validity because the results of the researcher are often evidently clear for public scrutiny.&nbsp.&nbsp.

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