What is expectation bias in the context of scientific investigation?

Expectation bias in the context of scientific investigation refers to the tendency of investigators to formulate conclusions or interpret data based on preconceived notions or assumptions, rather than on an objective analysis of all the evidence gathered. This bias can lead to a significant distortion in the investigative process, as it may cause the investigator to overlook or dismiss data that contradicts their initial beliefs or expectations.

By allowing preconceived conclusions to influence the analysis, the validity of the results may be compromised. It's crucial in scientific investigation to approach data without an agenda, ensuring that all relevant information is considered before drawing conclusions. This method promotes a more accurate and reliable outcome and safeguards against biases that may skew the understanding of the situation.

In contrast, a thorough analysis of all data, a systematic approach to evidence collection, and reliance on established scientific principles are essential practices that help minimize bias and ensure a more objective examination of findings.