What is the psychological term for disregarding correct but unwanted information? Sometimes people seem to be very resistant to information that is in conflict with prior beliefs, even when this new information is very plausible.

For example, a patient might change a doctor, because he/she does not get the diagnosis he/she expected even if the diagnosis is correct.

How is the psychological term for this tendency?
Belief perseverance is "the tendency to cling to one's initial belief even after receiving  new  information that  contradicts or dis-confirms  the basis of that belief" (Anderson, 2007).

Belief perseverance is usually regarded as a special case of the confirmation bias. (Also see these earlier questions.)

References

Anderson, C.A. (2007). Belief perseverance (pp. 109-110). In R. F. Baumeister &amp; K. D. Vohs (Eds.), Encyclopedia of Social Psychology. Thousand Oaks, CA: Sage.