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  • Title: Evolving artificial sign languages in the lab: From improvised gesture to systematic sign.
    Author: Motamedi Y, Schouwstra M, Smith K, Culbertson J, Kirby S.
    Journal: Cognition; 2019 Nov; 192():103964. PubMed ID: 31302362.
    Abstract:
    Recent work on emerging sign languages provides evidence for how key properties of linguistic systems are created. Here we use laboratory experiments to investigate the contribution of two specific mechanisms-interaction and transmission-to the emergence of a manual communication system in silent gesturers. We show that the combined effects of these mechanisms, rather than either alone, maintain communicative efficiency, and lead to a gradual increase of regularity and systematic structure. The gestures initially produced by participants are unsystematic and resemble pantomime, but come to develop key language-like properties similar to those documented in newly emerging sign systems.
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