This methodological technique aims to reduce bias in results by preventing researchers from knowing which study condition a participant has been allocated. There are different levels to blinding that determine who is blinded from a study:
- Single-blind study: The participant does not know which group they have been randomised to
- Double-blind study: The participant, clinicians and researchers do not know what condition they are randomised to
- Triple-blind study: The participant, clinicians, researchers, and those conducting the analysis of the data do not know the study conditions