con·fir·ma·tion /ˌkänfərˈmāSH(ə)n/ n : the action of confirming something or the state of being confirmed.
bi·as /ˈbīəs/ n : 1. prejudice in favor of or against one thing, person, or group compared with another, usually in a way considered to be unfair; 2. a concentration on or interest in one particular area or subject; 3. a systematic distortion of a statistical result due to a factor not allowed for in its derivation.
con·fir·ma·tion bi·as /ˌkänfərˈmāSH(ə)n ˈbīəs/ n : The tendency to interpret new evidence as confirmation of one’s existing beliefs or theories.