Controlled Studies

Controlled studies are scientific investigations that test the effect of a specific variable while keeping other conditions constant. Participants are usually divided into two groups: one that receives the treatment or intervention (experimental group) and another that does not (control group). The control group provides a baseline for comparison, helping researchers determine if the treatment has a genuine impact. This method helps eliminate bias and ensures that the results are due to the intervention itself, rather than other factors. Controlled studies are essential for establishing reliable evidence in scientific research, especially in medicine and social sciences.