Why do we have belief perseverance?

Belief perseverance is the tendency to maintain one's beliefs even in the face of evidence that contradicts them. We see this tendency with all kinds of beliefs, including those about the self and others, as well as beliefs about the way the world works, including prejudices and stereotypes.

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.

answer; (trauma);