nucleation

LIT-825: Larger communities create more systematic languages

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Properties6
StatusActive — read 2026-10-09 (NOTE-628), the main text in full from the publisher's version in the Radboud University repository; the electronic supplementary material was not read. Worth reading as the experiment that isolates community size: 12 groups of four and 12 groups of eight Dutch adults, fully connected, invented a typed language to describe moving shapes over 16 rounds with the same total amount of interaction. Larger groups' languages became more systematic (string distance tracking meaning distance), faster, and ended more systematic; larger groups also varied far less from one another, while some small groups never built structure. Larger groups faced more input variability, and input variability predicted the next round's gain in structure better than shared history did. Communicative success and convergence ended equal. It is a group-interaction paradigm, not a transmission chain: no generation turnover. Source of THEORY-164.
Tagslinguistics, compositionality, social-science, cognition
SupportsCLAIM-234 — The record's iterated-learning readings bear on lexical, structural and functional transmission, and none measures stance, footing or speech-act function along a chain
Cited as “grounds” byARG-027 — The record's iterated-learning readings show that pragmatic stances and footing are stabilized by transmission
Cited as “paper” byNOTE-628 — Larger communities create more systematic languages
Cited as “source” byTHEORY-1171 — In groups that build a new communication system, larger groups make it more systematic, and the greater variety of input they face drives the effect, THEORY-164 — As Raviv, Meyer and Lev-Ari report it, in a laboratory game where 12 fully connected groups of eight and 12 of four built a new communication system with total interaction held fixed, the larger groups' languages grew more systematic faster, ended more systematic and differed less from one another, while communicative success and convergence did not differ by size; input variability, higher in the larger groups, predicted the next round's gain in structure, an association measured and not manipulated

Graph View

Limor Raviv, Antje Meyer and Shiri Lev-Ari (2019), Proceedings of the Royal Society B 286(1907):20191262 — DOI-10.1098/rspb.2019.1262

Key takeaways

  • The question. Cross-linguistic surveys find that languages of larger communities have simpler morphology and more regular grammar, but size is confounded with sparse networks, contact and adult second-language learners. The experiment holds those fixed and varies size alone.
  • The design. 144 native Dutch speakers in 12 groups of four and 12 of eight, every member able to pair with every other. After a naming round, pairs alternated as producer and guesser, describing scenes (four novel shapes moving at varying angles, each with an idiosyncratic fill) with typed nonsense strings from a restricted alphabet, over 15 communication rounds and two individual test rounds. Total interaction was equal; members of larger groups had half the shared history with each partner.
  • Structure. Linguistic structure (the correlation between string distances and meaning distances in each participant’s lexicon) rose over rounds, rose faster in larger groups, and ended higher (β = 0.11, p = 0.006). Larger groups varied less from one another; some small groups never developed systematic grammars.
  • Everything else. Communicative success and convergence rose over time and ended equal across sizes; larger groups’ languages were less stable over the experiment but equally stable by the end. On every measure, small groups varied more, which the authors read as small communities being “more vulnerable to drift”.
  • The mechanism tested. Larger groups had more input variability. Input variability at round n predicted the gain in structure at n + 1, and so did less shared history; together, only input variability remained significant (β = 0.011, p = 0.012). More structure predicted better convergence and accuracy across rounds.

Standing in the record

Filed on 2026-10-09 from the manuscript bibliography of 2026-10-09 (work what-survives-translation) at the owner’s request: the manuscript considered it and dropped it from the final reference list. It is read here on its own merits. See the curation entry of that day.

Read on 2026-10-09 (NOTE-628). The reading is the source of THEORY-164, the record’s statement of the group-size effect and its limits. It is not an iterated-learning study: nobody is replaced, and structure arises among interacting peers, so it stands beside the transmission chains of LIT-771 and LIT-820 rather than in their line.

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