Experimental research is a scientific method used to test hypotheses by manipulating variables in a controlled environment. Researchers create experiments to observe how changes in one factor, known as the independent variable, affect another factor, called the dependent variable. This approach helps establish cause-and-effect relationships, making it a powerful tool in fields like psychology, medicine, and education. In an experimental study, participants are often divided into groups, such as a control group and an experimental group. The control group does not receive the treatment, while the experimental group does. This comparison allows researchers to determine the impact of the treatment, leading to valuable insights and advancements in knowledge.