Temperaments as Basic Bias

In this work, we argue that the lack of a solid theoretical basis and the absence of an integrative movement in psychological science within evolutionary perspectives has meant that the various attempts to explain and define the phenomenon of “temperaments” offer notions that are either too broad or simply imprecise and, as a result, they failed to reach a high level of consensus among researchers in this science. In this regard, we understand that the evolutionary theory proposed by Osmo (Integrative Psychological and Behavioral Science 57:205–234, 2023) is promising for reaching such a consensus. Thus, the objective of this article is, from this theory, to offer a better understanding of the phenomenon of “temperaments”, and, based on it, to develop a precise and parsimonious definition of this term.