What are biases? A bias is a disproportionate favouring or disfavouring of a particular idea, person, or group. This is usually in a prejudicial or even unfair manner. Biases can be conscious or unconscious (explicit or implicit, respectively). This article is concerned with cognitive biases: a systematic error in thinking that affects how we process information, make decisions, and form judgments. Most of our biases happen in the subconscious mind, they’re triggered by the