Abstract
Intersubjectivity is a concept central to human interaction, broadly understood as the sharing of minds. There is a rich diversity of conceptualizations of intersubjectivity, but detailed operationalization for its component processes in social interactions are scarce. We propose a novel approach to examine detailed variation in intersubjectivity in interaction. Our approach combines two previously formulated frameworks: the hierarchically organized developmental levels of intersubjectivity put forth in the field of developmental psychology, and three domains or orders of social interaction - affect, deontics, and epistemics - discussed in conversation analytic research literature. The interdisciplinary integration of these two frameworks allows a more crystallized view of intersubjectivity, which will benefit our understanding of the fine-scale social interaction processes as they vary in the course of the moment-to-moment unfolding of social action, across different stages of human social development, and between individuals belonging to different clinical groups and even to different species.