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What is a cognitive bias?

Cognitive biases refer to mental errors that are found in our judgment and in our impressions. These errors occur when we have to interpret and manage information from the world around us. No one is completely immune to it and certain contexts and factors are particularly conducive to it. 

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Explore cognitive biases

Consult the list of biases in alphabetical order

Consult the directory of biases by category

View topics that discuss bias in context

Consult the theory surrounding the notion of cognitive bias



Individual level

Availability heuristic

Interpersonal level

Representativeness heuristic

Intergroup level

Anchoring heuristic


Need for

Need for security

Need for self-esteem

Need for cognitive closure

Need for cognitive consonance