No existe una “huella dactilar” fija para cada emoción.

Emotions like anger do not have a fixed fingerprint. Stereotypes about anger don't always hold true in reality, as instances of anger can vary widely. For example, anger can result in both pleasant and unpleasant feelings, as well as both higher and lower blood pressure. The physiology of anger is linked to our physical movements, which in turn depend on the situation we are in. As a result, the brain bases of anger also depend on the specific situation. However, this variability is not random, as there is a structured variation in the evidence that can be predictable with proper measurement.