A single blind experiment only the participants does not know whether they are part of the treatment or the control group, whereas in a double-blind experiment both the participant and the experimenter are kept in the dark as to who is in the treatment and who is in the group. Double blind study serves as a standard by which all the studies are judged since it minimizes both the potential patient biases and potential assessor biases. A blind experiment would reduce the risk of bias from the effect which gives a genuine baseline for the research which ultimately allows to have a realistic statistical comparison.