Answer :
The research design is referred to as double-blind when neither the participants nor the researchers are aware of the condition each participant is assigned to.
Participants in scientific studies are frequently divided into one of two groups at random. Participants are given a therapy in the experimental or treatment group that the researchers believe might have an intriguing double-blind effect. The control group, however, does not receive any special treatment, thus its participants are representative of how design individuals act in everyday situations. The participants must be unaware of their placement in either of the two groups.
If the participants discover how they have been divided into groups, there is a problem. If that occurs, participants may alter their behavior in design a way double-blind that could affect the study's findings. If the study's researchers are aware of the participants' group assignments, it can also be problematic.
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