In a double-blind study, neither the researchers nor the subjects know who is receiving the real treatment and who is receiving the placebo. This design is used for the purpose of minimizing bias.
1. By keeping both the researchers and the subjects unaware of who is receiving the real treatment or the placebo, the likelihood of bias influencing the results is reduced. This helps ensure that the study's findings are more objective and reliable.
2. Minimizing bias is essential in scientific research to obtain accurate results and draw valid conclusions. If either the researchers or the subjects knew who was receiving the real treatment, their expectations or behaviors could unconsciously influence the outcome, leading to biased results.
In conclusion, the main purpose of implementing a double-blind study design is to minimize bias and enhance the credibility and validity of the research findings.
