Abstract

In my dissertation, I explore the remarkable talent of human beings to modify and co-opt resources of their material and socio-cultural environment, and integrate them with their biological capacities in order to enhance their cognitive prowess. In the first part, I clarify and defend the claim – known as the extended mind thesis – that a significant portion of human cognition literally extends beyond the head into the world, actively incorporating our bodies and an intricate web of material resources (Clark, 2003, 2008; Wilson, 2004). Yet since much of distinctively human cognition occurs when we think in groups, I argue that the bias of this thesis to view cognition as an essentially solitary (albeit bodily or technologically extended) activity is misplaced. In the second part, I re-deploy the idea of cognitive extensions to establish a scientifically respectable version of the group mind thesis – i.e., the claim that groups can have emergent cognitive properties and capacities in their own right.