What is an assignment bias?

Assignment bias occurs when individuals in a study are assigned to different groups in a way that systematically favors one group over another, potentially influencing the outcomes. This can happen due to non-random assignment, where characteristics of participants affect their group placement, leading to confounding variables. As a result, the findings may not accurately reflect the true effects of the intervention or treatment being studied. It is crucial to minimize assignment bias to ensure the validity and reliability of research results.