According to the dictionary, the word bias simply means a preference or an inclination, especially one that inhibits impartial judgment. For example, you might have a favorable impression of the teaching profession because your mother and wife are both in that field.  Or, you might asked to be excused from participating as a juror given your bias against cops following a bad experience you had with a security guard at your school. Confirmation bias, moreover, is the tendency to search for, favor, interpret, and remember information in such a way as to confirm one's preexisting hypotheses or beliefs, while giving disproportionately less consideration to alternative possibilities. The perfect example? Politics. Democratic voters tend to get their information from liberal-leaning networks like CNN and MSNBC while Republicans opt for conservative channels like Fox News.  Indeed, we trust and recall information that fits in with our existing world view while discounting information...