Core Language of Thought
Fodor’s “Language of Thought” (also called Mentalese) hypothesis—that we use a language-like, syntactic system in processing thoughts instead of natural languages—caused controversies in philosophy, psychology, and linguistics. While many researchers proposed their perspectives, both for and against, none of them addressed its evolutionary and sociocultural variabilities as far as I know. Accordingly, I provide a novel perspective on the hypothesis by discussing the interplay among our cognition, natural languages, evolution, and sociocultural factors. First, like one speaks personalized English as his/her idiolect, individuals have their own “Idiolects of Thought” as a derivative of Mentalese. Second, while Mentalese varies from individual to individual, “Core Language of Thought” is cognitively fundamental and largely shared across individuals.