Group Randomization

Group randomization is a research method where entire groups, such as schools or communities, are randomly assigned to different treatments or conditions instead of individual participants. This approach is used when interventions are applied at the group level or when individual assignment is impractical. It helps ensure that differences observed between groups are likely due to the intervention rather than other factors. By randomizing whole groups, researchers can better evaluate the effectiveness of strategies or policies in real-world settings, while accounting for how group dynamics may influence outcomes.