HomePsychologyCognitive PsychologyWhat is Confirmation Bias?
Psychology·2 min·Updated Mar 13, 2026

What is Confirmation Bias?

Confirmation Bias

Quick Answer

It is a tendency to favor information that confirms existing beliefs while ignoring contradictory evidence. This cognitive bias affects how people process information and make decisions.

Overview

Confirmation bias is a psychological phenomenon where individuals seek out, interpret, and remember information in a way that confirms their pre-existing beliefs. This bias can lead people to overlook or dismiss evidence that contradicts their views. For example, if someone believes that a particular diet is effective, they may focus on success stories and ignore studies showing little to no results. This bias works by influencing how we gather information and how we perceive it. When faced with evidence, individuals with confirmation bias will often interpret ambiguous information as supportive of their beliefs. This can create a feedback loop where the individual becomes more entrenched in their views, making it harder to change their opinions even in the face of strong evidence to the contrary. Understanding confirmation bias is important because it can affect decision-making in various aspects of life, including politics, health, and personal relationships. In cognitive psychology, recognizing this bias helps researchers understand how people process information and why they may hold onto false beliefs despite overwhelming evidence. By being aware of confirmation bias, individuals can strive to consider a broader range of information and viewpoints.


Frequently Asked Questions

Confirmation bias can lead people to make poor decisions by reinforcing their existing beliefs without considering all available evidence. This can result in ignoring important information that may contradict their views, ultimately skewing their judgment.
While it can be challenging to overcome confirmation bias, being aware of it is the first step. Actively seeking out diverse perspectives and questioning one's own beliefs can help reduce its influence.
Yes, confirmation bias can occur in many areas, including politics, science, and personal relationships. It affects how people interpret news, research findings, and even daily interactions.