title: Evolution of universal grammar.
abstract: Universal grammar specifies the mechanism of language acquisition. It determines the range of grammatical hypothesis that children entertain during language learning and the procedure they use for evaluating input sentences. How universal grammar arose is a major challenge for evolutionary biology. We present a mathematical framework for the evolutionary dynamics of grammar learning. The central result is a coherence threshold, which specifies the condition for a universal grammar to induce coherent communication within a population. We study selection of grammars within the same universal grammar and competition between different universal grammars. We calculate the condition under which natural selection favors the emergence of rule-based, generative grammars that underlie complex language.
authors.affiliation: Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540, USA. nowak@ias.edu
authors.forename: M A
authors.initials: MA
authors.lastname: Nowak
authors.forename: N L
authors.initials: NL
authors.lastname: Komarova
authors.forename: P
authors.initials: P
authors.lastname: Niyogi
mesh_terms: D000465:Algorithms; D005075:Biological Evolution; D002648:Child; D006801:Humans; D007802:Language; D007858:Learning; D008037:Linguistics; D008433:Mathematics; D008568:Memory; D012641:Selection, Genetic