Confirmation Bias (Part 1)

We seek out and interpret information that confirms our existing beliefs, and conveniently ignore or dismiss anything that contradicts them.

• An investor bullish on a stock reads only positive analyst reports and dismisses warnings as 'special cases.'
• A person who believes in astrology remembers every time the horoscope was accurate and forgets the countless misses.
• Doctors who are convinced of a diagnosis selectively notice symptoms that confirm it and overlook those that don't.