What is the essential difference between non experimental and experimental?

The essential difference between non-experimental and experimental research lies in the manipulation of variables. In experimental research, the researcher actively intervenes and manipulates one or more independent variables to observe their effect on a dependent variable, allowing for causal inferences. In contrast, non-experimental research observes and analyzes relationships without such manipulation, often relying on observational data, surveys, or correlational studies, making it difficult to establish causality.