Reactive devaluation is a cognitive bias that causes people to devalue things that are offered to them, especially if offered by someone they perceive negatively. For example, reactive devaluation can cause someone to wrongly dismiss a good business proposal as bad, just because they dislike the person who offered it.| Effectiviology
A cognitive bias is a systematic pattern of deviation from rationality, which occurs due to the way our cognitive system works. Accordingly, cognitive biases cause us to be irrational in the way we search for, evaluate, interpret, judge, use, and remember information, as well as in the way we make decisions.| Effectiviology