For instance, disconfirmation bias
reflects that people pay greater attention to information that negates their perspective rather than to that which supports their pre-existing views (Edwards & Smith, 1996; Lord, Ross, & Lepper, 1979).
Difficulty in changing perceptions is a human frailty--we are prone to confirmation or disconfirmation bias
, and use evidence to shore up our beliefs rather than to embrace the necessary change.
Smith, A Disconfirmation Bias
in the Evaluation of Arguments, 71 J.