A blind or blinded - experiment is an experiment in which information about the test is masked (kept) from the participant, to reduce or eliminate bias, until after a trial outcome is known. It is understood that bias may be intentional or unconscious, thus no dishonesty is implied by blinding. If both tester and subject are blinded, the trial is called a double - blind experiment.
double blinding in experiments is important so that
reduce or eliminate bias, until after a trial outcome is known