Confirmation bias is a psychological phenomenon that significantly influences our thinking and decision-making. This cognitive error occurs when people seek, interpret or remember information that confirms their existing beliefs or hypotheses, while ignoring or downgrading information that contradicts them. It is a widespread and human behaviour that tends to be present in many aspects of daily life.

Confirmation bias can have serious consequences, particularly in relation to our ability to make objective and informed decisions. This is because it leads us to selectively seek out information that supports our own preconceptions or opinions. We tend to select news sources that confirm our views and often avoid considering alternative viewpoints. This can lead to a distorted view of the world and limit our ability to engage in objective discussion.

An example of confirmation bias is when someone believes in a particular conspiracy theory and then specifically searches for information that supports this theory while ignoring contradictory evidence. This reinforces pre-existing beliefs and leads to a vicious cycle of confirmation bias.

It is important to recognise that confirmation bias can occur unconsciously and is not due to malicious intent. Nevertheless, it can cause considerable damage, particularly in terms of the formation of prejudices and the spread of misinformation.

In order to overcome confirmation bias, it is advisable to consciously seek out different points of view and information. It is important to scrutinise yourself and develop a willingness to question existing beliefs. Recognising this cognitive error and striving to make more objective decisions can help to draw more informed conclusions and develop a more diverse view of the world.