The role of roles in uniquely human cognition and sociality

To understand themselves as playing a social role, individuals must understand themselves to be contributing to a cooperative endeavor. Psychologically, the form of cooperation required is a specific type that only humans may possess, namely, one in which individuals form a joint or collective agency to pursue a common end. This begins ontogenetically not with the societal level but rather with more local collaboration between individuals. Participating in collaborative endeavors of this type leads young children, cognitively, to think in terms of different perspectives on a joint focus of attention - including ultimately an objective perspective - and to organize their experience in terms of a relational-thematic-narrative dimension. Socially, such participation leads young children to an understanding of self-other equivalence with mutual respect among collaborative partners and, ultimately, to a normative (i.e. moral) stance toward “we” in the community within which one is forming a moral role or identity. The dual-level structure of shared endeavors/realities with individual roles/perspectives is responsible for many aspects of the human species' most distinctive psychology.