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Norwalk Navigating Controversial Literature: A Research Guide on Banned Books

What is Confirmation Bias?

Brains & Confirmation Bias

Confirmation Bias

Confirmation bias refers to the tendency of people to search for, interpret, favor, and recall information in a way that confirms their preexisting beliefs or hypotheses. In other words, individuals are more likely to notice and remember information that aligns with their existing beliefs, while disregarding or downplaying information that contradicts them. This bias can affect various aspects of human cognition and decision-making, including:

  1. Information Processing: People may selectively seek out information that supports their viewpoints while avoiding or ignoring information that challenges them. This can lead to a skewed perception of reality as individuals may only be exposed to a limited range of perspectives.

  2. Interpretation of Evidence: When presented with ambiguous or conflicting evidence, individuals may interpret it in a way that confirms their existing beliefs. They may give more weight to information that supports their views and downplay evidence that contradicts them.

  3. Memory Recall: Confirmation bias can also influence how people remember information. They are more likely to recall instances that reinforce their beliefs while forgetting or distorting evidence that challenges them.

  4. Decision-making: Confirmation bias can influence decision-making processes by leading individuals to make choices that align with their preexisting beliefs, even if there is evidence suggesting alternative courses of action would be more rational or beneficial.

Confirmation bias can have significant implications in various domains, including politics, science, religion, and interpersonal relationships. It can contribute to polarization, reinforce stereotypes, hinder critical thinking, and impede the ability to consider alternative perspectives. Recognizing and mitigating confirmation bias is essential for promoting open-mindedness, rational decision-making, and a more accurate understanding of the world.