Abstract and Keywords
Experimental and quasi-experimental research provides the foundation for all evidence-based practice systems that seek to identify and promote the use of social work practices of demonstrated effectiveness. This reflects the prevailing perspective that experimental research is the only definitive basis for claims that certain outcomes can be altered by the effects of a given intervention. At this point in the evolution of social work research, however, the body of work based on experimentation is not extensive. In response to the challenges of implementing experiments related to social interventions, researchers have developed new approaches, such as group randomized designs. Also, newly developed statistical methods may provide ways to control the selection bias inherent in quasi-experimental designs. This entry explores the central place of experimental and quasi-experimental designs in social work research, the challenges of using them, and recent developments that may expand their use.
Access to the complete content on Encyclopedia of Social Work requires a subscription or purchase. Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription. If you are a student or academic complete our librarian recommendation form to recommend the Oxford Research Encyclopedias to your librarians for an institutional free trial.
If you have purchased a print title that contains an access token, please see the token for information about how to register your code.