| Experimental and Quasi-Experimental Designs for ResearchDonald T. Campbell, Julian C. StanleyUpdated: Friday June 8, 2007 
			 
 
			 
 Sections
				Problem and Background
				Three Pre-Experimental Designs
				Three True Experimental Designs
				Quasi-Experimental Designs
				Correlational and Ex Post Facto Designs
			 
			 
 
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