Teaching and the origin of the normativity

Norms play a crucial role in governing human societies. From an early age, humans possess an innate understanding of norms, recognizing certain behaviours, contexts, and roles as being governed by them. The evolution of normativity has been linked to its contribution to the promotion of cooperation in large groups and is intertwined with the development of joint intentionality. However, there is no evolutionary consensus on what normatively differentiated our hominin ancestors from the phylogenetic lineage leading to chimpanzees and bonobos. Here we propose that the development of teaching through a process of evaluative feedback between parent and offspring functioned as a prerequisite for the later development of normativity. Parents approve or disapprove of offspring’s behaviours based on their own learned knowledge of what is appropriate or inappropriate. We argue our proposition using a simple model of cultural transmission, which shows the adaptive advantage offered by these elementary forms of teaching. We show that an important part of this adaptive advantage can arise from the benefits derived from guidance about which behaviours to adopt or reject. We propose that this type of guidance has fundamental elements that characterise the normative world. We complete our argument by reviewing several studies that examine the emergence of normativity in young children without prior exposure to a normative framework with respect to the behaviours under analysis. We suggest that this normativity is best interpreted as manifestations of teaching among young children rather than as norm recognition among early normative children.