Description: Quasi-experimental research is a methodological approach that resembles experimental research but lacks random assignment of participants to study groups. This type of research is commonly used in situations where randomization is not possible or ethical, allowing researchers to observe the effects of an intervention or treatment in a more natural setting. It often relies on pre-existing groups, such as school classes or communities, which can introduce confounding variables. However, despite these limitations, quasi-experimental research remains valuable as it allows for the evaluation of programs and policies in real-world contexts. Key characteristics of this approach include group comparisons, measuring outcomes before and after the intervention, and using statistical methods to control for external variables. The relevance of quasi-experimental research lies in its ability to provide evidence on the effectiveness of interventions in situations where randomized controlled trials are not feasible, making it an important tool in various fields such as education, public health, and social sciences.
