Nobody likes to be wrong. But why? What happened in our youth that made us fight to the dying breath over a point, alienating friends, family and/or coworkers? Perhaps it was the fear of being laughed at or looking foolish – perhaps it’s ingrained in our DNA. For example, if you factor in the challenge of cognitive dissonance, this becomes uncomfortable. We then cling to one that feels right, drop the other and then attempt to find proof that we were correct. The thing is, our thinking is not rational, it is prone to errors and no one is immune. (https://pragmaticreform.wordpress.com/2013/10/19/cognitive-biases1/)
Nothing is more convincing than your own beliefs – I am sure that at one point, we have all had a situation occur where we looked less than stellar in our own minds. Where this contradictory instance occurs, we may spend the time rethinking the outcome to reflect more of what fits better with our set cognitive construct.
Is confirmation bias tied to our intelligence? One might think that someone of higher intelligence would be less susceptible to such a manifest – they have a wider range of cognitive knowledge and less inclined to side with one side over another by giving equal consideration to both sides of a situation or argument. As it turns out, intelligence does not matter and those with higher IQs’ are just as likely to have a confirmation bias than anyone else. (http://www.globalcognition.org/intelligence-and-cognitive-bias/)