Proceedings of the Annual Meeting of the Cognitive Science Society

Work has shown that greater need to refer to a semantic domain drives greater lexical precision within that domain, both across languages, and in lexical choice in (within-language) dyadic interactions. We complement this, studying the relation between communicative need and precision across communities of speakers of the same language. Taking kinship as our domain, we find evidence that differences in communicative need between communities within a language contribute to variation in lexical precision in use. We show that this variation is partly due to differences in the kinds of pragmatic contexts the communities talk about, but that community variation in lexical precision exists over and above the factors we study, suggesting that more work is needed to elucidate additional pragmatic influences on the simplicity--informativity trade-off.