The tendency to seek, interpret, and create information that verifies existing beliefs.

Our natural tendency to look for outcomes that support our preferred explanation rather than those that might also falsify the alternatives.

The tendency to seek and interpret information that confirms existing beliefs. Our conclusions are unduly biased by what we want to believe.

The tendency to seek evidence to support one's hypothesis rather than to look for evidence that will undermine the hypothesis.

The greater likelihood of being able to recall things consistent with our beliefs.

In psychology and cognitive science, confirmation bias (or confirmatory bias) is a tendency to search for or interpret information in a way that confirms one's preconceptions, leading to statistical errors. Confirmation bias is a type of cognitive bias and represents an error of inductive inference toward confirmation of the hypothesis under study.