PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -A double-blind study is one in which neither the participants nor the experimenters know who is receiving a particular treatment. This procedure is utilized to prevent bias in research results. Double-blind studies are particularly useful for preventing bias due to demand characteristics or the placebo effect.

Detailed explanation-2: -Blinding (sometimes called masking) is used to try to eliminate such bias. It is a tenet of randomised controlled trials that the treatment allocation for each patient is not revealed until the patient has irrevocably been entered into the trial, to avoid selection bias.

Detailed explanation-3: -Some of the methods used for blinding outcome assessors included centralised assess-ment of complementary investigations, clinical examin-ation that involved the use of video, audiotape or photography, and adjudication of clinical events.