A quasi-experimental design is one that looks a bit like an experimental design but lacks the key ingredient -- random assignment. My mentor, Don Campbell, often referred to them as "queasy" experiments because they give the experimental purists a queasy feeling.
www.socialresearchmethods.net/kb/quasiexp.htm www.socialresearchmethods.net/kb/quasiexp.htm
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The obvious concern with all of the quasi-experimental designs results from the method of choosing subjects to participate in the experiment. ... Table 5.2: Diagrams of Quasi Experimental Designs ... 5.3 Quasi-Experimental Design...
allpsych.com/researchmethods/quasiexperimentaldesign.ht... allpsych.com/researchmethods/quasiexperimentaldesign.html
Quasi-experimental design - Wikipedia, the free encyclopedia
A quasi-experiment is a scientific research method primarily used in the social sciences. "Quasi" means likeness or resembling, so therefore quasi-experiments share characteristics of true experimen...
en.wikipedia.org/wiki/Quasi-experimental_design
Quasi-experimental design involves selecting groups, upon which a variable is tested, without any random pre-selection processes. ... Quasi-experimental design is often integrated with individual case studies; the figures and results generated often reinforce the findings in a case study, and allow some sort of...
www.experiment-resources.com/quasi-experimental-design.... www.experiment-resources.com/quasi-experimental-design.html
Experimenal and Quasi-Experimental Design; ... Experimental design and quasi-experimental design are different in how they approximate hypothetical counterfactuals. Experimental design employs random assignment of units to conditions, while quasi-experimental design do not randomly assign units to condition but it...
www.msu.edu/~parkyon8/930L/experiment.html
Quasi-experimental designs were developed to deal with the messy world of field research, where it is not always practical, ethical, or even possible to randomly assign persons to experimental and control groups. ... The little orange ball beside each design is "clickable" and will take you to a discussion of that design.
www.fammed.ouhsc.edu/tutor/qexpdes.htm
QUASI-EXPERIMENT ... - interupted time-series design ... Quasi-Experimental Desig...
www.ndsu.nodak.edu/instruct/nawrot/Courses/Psych350.04/... www.ndsu.nodak.edu/instruct/nawrot/Courses/Psych350.04/QuazexpDesign.html
The evaluator can have more confidence in the results of a quasi-experiment than he or she can in the results of the pre-post design, but still cannot be certain that the program activities caused ... Main Page Guide to Program Evaluation Assessing Program Performance: Quasi-Experimental (Comparison Group) Design...
www.ojp.usdoj.gov/BJA/evaluation/guide/ap6.htm
Carefully evaluate your design ? Carefully evaluate the data you will collect ? Carefully evaluate your data after you collect it ? Be aware of potential sources of threats to internal validity ? Be careful but creative with your design 34 Choosing a Design Design is a series of trade-offs Never really a perfect...
hcc.cc.gatech.edu/getDocument.php?doc=39
quasi-experimental design: This category of design is most frequently used when it is not feasible for the researcher to use random assignment. ... This article describes the strengths and limitations of specific types of quasi-experimental and true experimental design.
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