Title
Modeling the Emergence of Lexicons in Homesign Systems.
Abstract
It is largely acknowledged that natural languages emerge not just from human brains but also from rich communities of interacting human brains (Senghas, 2005). Yet the precise role of such communities and such interaction in the emergence of core properties of language has largely gone uninvestigated in naturally emerging systems, leaving the few existing computational investigations of this issue at an artificial setting. Here, we take a step toward investigating the precise role of community structure in the emergence of linguistic conventions with both naturalistic empirical data and computational modeling. We first show conventionalization of lexicons in two different classes of naturally emerging signed systems: (a) protolinguistic "homesigns" invented by linguistically isolated Deaf individuals, and (b) a natural sign language emerging in a recently formed rich Deaf community. We find that the latter conventionalized faster than the former. Second, we model conventionalization as a population of interacting individuals who adjust their probability of sign use in response to other individuals' actual sign use, following an independently motivated model of language learning (Yang, 2002, 2004). Simulations suggest that a richer social network, like that of natural (signed) languages, conventionalizes faster than a sparser social network, like that of homesign systems. We discuss our behavioral and computational results in light of other work on language emergence, and other work of behavior on complex networks.
Year
DOI
Venue
2014
10.1111/tops.12076
TOPICS IN COGNITIVE SCIENCE
Keywords
Field
DocType
Lexicon,Homesign,Conventionalization,Language emergence,Agent-based modeling,Sign language,Social networks
Population,Social network,Cognitive science,Psychology,Language acquisition,Lexicon,Sign language,Natural language,Natural (music),Linguistics,Vocabulary
Journal
Volume
Issue
ISSN
6.0
1.0
1756-8757
Citations 
PageRank 
References 
2
0.63
7
Authors
3
Name
Order
Citations
PageRank
Russell Richie120.63
Charles D. Yang255.14
Marie Coppola373.75