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quasi-experimental designs  

Definition

  • Definition A quasi-experimental design is a research methodology that possesses some, but not all, of the defining characteristics of a true experiment. In most cases, such designs examine the impact of one or more independent variables on dependent variables, but without assigning participants to conditions randomly or maintaining strict control over features of the experimental situation that could influence participants' responses. [Source: Encyclopedia of Social Psychology; Quasi-Experimental Designs]

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https://concepts.sagepub.com/social-science/concept/quasi-experimental_designs

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