regression discontinuity design

Regression discontinuity design is a research method used to evaluate the effect of a specific intervention or treatment. It relies on a clear cutoff point (like a test score) to decide who receives the treatment. By comparing individuals just above and just below this cutoff, who are similar in all other respects, researchers can estimate the treatment’s impact more accurately. Essentially, it’s like examining two nearly identical groups separated only by the cutoff, allowing for a more credible assessment of cause and effect without needing complex experimental setups.