Motivated Reasoning

This from the Skeptic's Dictionary:

"Motivated reasoning is confirmation bias taken to the next level. Motivated reasoning leads people to confirm what they already believe, while ignoring contrary data. But it also drives people to develop elaborate rationalizations to justify holding beliefs that logic and evidence have shown to be wrong. Motivated reasoning responds defensively to contrary evidence, actively discrediting such evidence or its source without logical or evidentiary justification. Clearly, motivated reasoning is emotion driven. It seems to be assumed by social scientists that motivated reasoning is driven by a desire to avoid cognitive dissonance. Self-delusion, in other words, feels good, and that's what motivates people to vehemently defend obvious falsehoods."