confirmation bias. This is when we look for and find evidence to support what we already believe, and ignore or rationalize away evidence that does not. And because we are so tribal by nature, we employ confirmation bias with extra vigor when it comes to defending the groups we belong to. Republicans tend to listen to conservative talk radio, watch Fox News and read the Wall Street Journal, gathering data and noting arguments that support their political beliefs. Democrats are more likely to listen to progressive talk radio and NPR, surf liberal blogs and read the New York Times. Everyone does it. Confirmation bias explains why so many rumors about candidates were eagerly embraced recently. … Research on confirmation bias has found that when subjects are presented with evidence that contradicts their deeply held beliefs, they dismiss it as invalid, while other subjects treat the same information as valuable when it confirms what they believe.

Jonestown and ‘confirmation bias’ - Los Angeles Times [sciencing]

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