Robert Hanna (Rationality and logic. MIT Press, Cambridge, 2006) articulates and defends the thesis of logical cognitivism, the claim that human logical competence is grounded in a cognitive faculty (in Chomsky’s sense) that is not naturalistically explicable. This position is intended to steer us between the Scylla of logical Platonism and the Charybdis of logical naturalism (/psychologism). The paper argues that Hanna’s interpretation of Chomsky is mistaken. Read aright, Chomsky’s position offers a defensible version of naturalism, one Hanna may accept (...) as far as his version of naturalism goes, although not one that supports the claim that cognitive science offers a place for logic that is somehow outside the natural, contingent order. (shrink)

In this paper we propose a pragmatic approach to the evolution of language based on analysis of a particular element of human communication: discourse coherence. We show that coherence is essential for effective communication. Through analysis of a collection of neuropsychological and neurolinguistic studies, we maintain that the proper functioning of executive processes responsible for planning and executing actions plays a key role in the construction of coherent discourses. Studies that tested the discursive and conversational abilities of bonobos have showed (...) that apes are unable to construct a flow of discourse governed by coherence, and therefore, apes’ conversational interactions are quite different from those of humans. We then propose that the emergence of coherence in communication occurred after the split between great apes’ and humans’ lines of descendants and that this emergence might have been the result of a specific gradual development in the course of hominin evolution of the executive functions. (shrink)

I explore Chomsky's naturalistic stance in cognitive science, his internalism in semantics and his attitude towards evolutionary assumptions.