Theory of mind as a proxy for Palaeolithic language ability

Symbolic artefacts have long been archaeology’s primary contribution to tracing the origin and subsequent development of human language. But the identification and interpretation of symbolic behaviour poses numerous interpretive problems, particularly before the Upper Palaeolithic where clearly referential forms of symbolic material are rare. As an alternative, theory of mind is presented here, detailing its intimate relationship with language and likely coevolution, alongside the factors which make it a more effective proxy. As a cognitive ability that grades in complexity and predicts linguistic skill in modern cognition, theory of mind also has the potential to denote specific syntactic and semantic features of language such as word reference, mental state verbs and complementation. The potential to detect theory of mind in the archaeological record is considered here, such as within the cultural transmission of stone tool technology and forms of complex social learning like imitation and teaching in early hominin technologies.