Abstract

On formal and empirical grounds, the overt form of language cannot be the vehicle that the mind uses for reasoning. Nevertheless, we most frequently experience our thought as "inner speech". It is argued that inner speech aids thought by providing a "handle " for attention, making it possible to pay attention to relational and abstract aspects of thought, and thereby to process them with greater richness. Organisms lacking language have no modality of experience that provides comparable articulation of thought; hence certain kinds of thought very important for human intelligence are simply unavailable to them.