When conducting research, there can be a, often unintended tendency to gravitate towards scholars and data that support the researcher's existing opinions, rather than remaining objective. This is referred to as confirmation bias and can result in contradictory evidence being overlooked. Confirmation bias presents problems in treatment as well as research, leading to diagnostic errors, inaccurate treatment, or improper treatment management.
Rather than denying or ignoring confirmation bias, it is important to recognize that such bias is inevitable to a certain extent. Researchers can overcome confirmation bias by making a targeted effort to evaluate all evidence objectively, particularly evidence that may be contradictory to the researcher's preconceptions. In medical research studies, the use of well-designed study protocols, including blinding or masking, are essential tools to overcome biased results.
Althubaiti, A. (2016). Information bias in health research: definition, pitfalls, and adjustment methods. Journal of Multidisciplinary Healthcare, 9, 211-217.