Abstract

The ability to understand both the self and others as purposeful agents — with thoughts, beliefs, and desires — seems to be central to the emergence of cultural processes both phylo- and ontogenetically. This ability has been termed second-order intentionality or “theory of mind” and has been conceptualized as a species-specific “trait” which is genetically predetermined, naturally selected and the resident of a dedicated module within the mind. Alternatively, we see it emerging out of a more general process — symbolization. The paper discusses the emergence of the symbolic function from previously existing forms of communication by analyzing the structures and functions of different kinds of signs used in human and non-human vocal communication. We reinterpret evidence from the study of non-human primate vocalizations and suggest that these vocalizations embody a semiotic type that, like all signs, is more highly developed than a signal, but is not catalogued within the basic Peircean triad of sign types . This form, the double indexical, is intermediary between indexes and symbols. We speculate on what structural and functional reorganization is required to establish a developmental continuity from signals through the various types of signs to the well-known structure of the symbol — and possibly beyond