“This doubling down in the face of conflicting evidence is a way of reducing the discomfort of dissonance, and is part of a set of behaviors known in the psychology literature as “motivated reasoning.” Motivated reasoning is how people convince themselves or remain convinced of what they want to believe—they seek out agreeable information and learn it more easily; and they avoid, ignore, devalue, forget, or argue against information that contradicts their beliefs.”
https://www.theatlantic.com/science/archive/2017/03/this-article-wont-change-your-mind/519093/?utm_