Quasi Experimental Designs - Research Methods - Lecture Slides, Slides of Research Methodology

Download Quasi Experimental Designs - Research Methods - Lecture Slides and more Slides Research Methodology in PDF only on Docsity! 1 Quasi-Experimental Designs Quasi-Experimental Designs If true experiment impractical or unethical. random assignment not possible Quasi-experimental designs allow study IV: limited control Subject variable of interest No random assignment Groups equivalent at start? Quasi-Experimental Designs Ex Post Facto Studies IV has already varied, outside of our control; If factor of interest has already varied, or outside of control Why not correlational study? Nonequivalent-Control-Group Comparison/control group, one or more treatment groups. No random assignment. Internal Validity? Pre-, post-tests. Nonequivalent Control Group Design Mixed Factorial Design Between-within design with one or more variables that is not manipulated. Mixed Factorial Design Docsity.com