Gene-culture coevolution of a linguistic system in two modalities

Sean G. Roberts, Connie De Vos

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Complex communication can take place in a range of modalities such as auditory, visual, and tactile modalities. In a very general way, the modality that individuals use is constrained by their biological biases (humans cannot use magnetic fields directly to communicate to each other). The majority of natural languages have a large audible component. However, since humans can learn sign languages just as easily, it the social environment or cultural inheritance. This paper suggests that we can explore the relative contribution of these factors by modelling the spontaneous emergence of sign languages that are shared by the deaf and hearing members of relatively isolated communities. Such shared signing communities have arisen in enclaves around the world and may provide useful insights by demonstrating how languages evolve as the deaf proportion of its members has strong biases towards the visual language modality. In this paper we describe a model of cultural evolution in two modalities, combining aspects that are thought to impact the emergence of sign languages in a more general evolutionary framework. The model can be used to explore hypotheses about how sign languages emerge.
Original languageEnglish
Title of host publicationProceedings of Evolang X, Workshop on Signals, Speech, and Signs
EditorsBart De Boer, Tessa Verhoef
Place of PublicationVienna, Austria
Number of pages5
Publication statusPublished - 2014
Externally publishedYes


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