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socialresearchmethods.net/kb/quasi-experimental-design

I’m not going to try to cover the quasi-experimental designs comprehensively. Instead, I’ll present two of the classic quasi-experimental designs in some detail and show how we analyze them. Probably the most commonly used quasi-experimental design (and it may be the most commonly used of all designs) is the nonequivalent groups design. In ...

study.com/academy/lesson/quasi-experimental-designs-definition-characteristics...

This lesson explores the basic definition of why there is the label of quasi-experimental design in addition to what types of designs are quasi-experimental.

www.unicef-irc.org/publications/pdf/brief_8_quasi-experimental design_eng.pdf

Quasi-experimental research designs, like experimental designs, test causal hypotheses. A quasi-experimental design by definition lacks random assignment. Quasi-experimental designs identify a comparison group that is as similar as possible to the treatment group in terms of baseline (pre-intervention) characteristics.

explorable.com/quasi

Design. Quasi-experimental design involves selecting groups, upon which a variable is tested, without any random pre-selection processes.. For example, to perform an educational experiment, a class might be arbitrarily divided by alphabetical selection or by seating arrangement.

en.wikipedia.org/wiki/Quasi-experiment

A quasi-experiment is an empirical interventional study used to estimate the causal impact of an intervention on target population without random assignment.Quasi-experimental research shares similarities with the traditional experimental design or randomized controlled trial, but it specifically lacks the element of random assignment to treatment or control.

www.statisticssolutions.com/quasi-experimental-research-designs

Some quasi-experimental research designs do not include a comparison with a control group at all. Known as before-and-after, pre-test/post-test, or pre-experimental designs, these quasi-experimental approach designs expose all subjects to the treatment or stimulus.

www.researchgate.net/publication/286122828_Quasi-Experimental_Research_Designs

Quasi-experimental research designs are the most widely used research approach employed to evaluate the outcomes of social work programs and policies.

opentextbc.ca/researchmethods/chapter/quasi-experimental-research

Explain what quasi-experimental research is and distinguish it clearly from both experimental and correlational research. Describe three different types of quasi-experimental research designs (nonequivalent groups, pretest-posttest, and interrupted time series) and identify examples of each one.

www.ncbi.nlm.nih.gov/pmc/articles/PMC1380192

Quasi-experimental study designs, often described as nonrandomized, pre-post intervention studies, are common in the medical informatics literature. Yet little has been written about the benefits and limitations of the quasi-experimental approach as applied to informatics studies.

classroom.synonym.com/quasi-experimental-study-8621440.html

Countless quasi-experimental topics focus on a person's environment or social setting. For example, a sociologist may research two boys of the same age who live in the same poor neighborhood, attend the same schools and have access to the same opportunities.