A randomized experiment is a research method used to determine the effects of a treatment or intervention. In this approach, participants are randomly assigned to different groups, typically a treatment group and a control group. This random assignment helps ensure that any differences observed between the groups can be attributed to the treatment rather than other factors. By using randomization, researchers can minimize biases and confounding variables, making the results more reliable. This method is commonly used in fields like medicine, psychology, and social sciences to test the effectiveness of new drugs, therapies, or programs, ensuring that findings are valid and generalizable.