Transcription of Experimental Design 1 - ed
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Experimental Design 1 Running Head: Experimental Design Experimental Design and Some Threats to Experimental Validity: A Primer Susan Skidmore Texas A&M University Paper presented at the annual meeting of the Southwest Educational research Association, New Orleans, Louisiana, February 6, 2008. Experimental Design 2 Abstract Experimental designs are distinguished as the best method to respond to questions involving causality. The purpose of the present paper is to explicate the logic of Experimental Design and why it is so vital to questions that demand causal conclusions. In addition, types of internal and external validity threats are discussed. To emphasize the current interest in Experimental designs, Evidence-Based Practices (EBP) in medicine, psychology and education are highlighted.
Feb 06, 2008 · as that which “is evaluated using experimental or quasi-experimental designs”. ... “No other type of quantitative research (descriptive, correlational, or causal-comparative) is as powerful in demonstrating the existence of cause-and-effect relationships among variables as experimental research” (Gall et al., 2005, p.
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