ArticlePhilosophical transactions of the Royal Society of London. Series B, Biological sciences2022
Cumulative cultural evolution, population structure and the origin of combinatoriality in human language.
Article in Philosophical transactions of the Royal Society of London. Series B, Biological sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- Cultural Transmission Promotes the Emergence of Statistical Properties That Support Language Learning.Cognitive science · 2025Article
- Deep neural networks and humans both benefit from compositional language structure.Nature communications · 2024Article
- Half a century of quantitative cultural evolution.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- What made us "hunter-gatherers of words".Frontiers in neuroscience · 2023Article
- Reconstructing social networks of Late Glacial and Holocene hunter-gatherers to understand cultural evolution.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Article
- When does cultural evolution become cumulative culture? A case study of humpback whale song.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Article
- The emergence of collective knowledge and cumulative culture in animals, humans and machines.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Article
- Collective minds: social network topology shapes collective cognition.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Review
- Paradox of diversity in the collective brain.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Article
- The origins of human cumulative culture: from the foraging niche to collective intelligence.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Article
- Population turnover, behavioral conservatism, and rates of cultural evolution.Behavioral ecology : official journal of the International Society for Behavioral EcologyArticle
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Abstract
Language is the primary repository and mediator of human collective knowledge. A central question for evolutionary linguistics is the origin of the combinatorial structure of language (sometimes referred to as duality of patterning), one of language's basic design features. Emerging sign languages provide a promising arena to study the emergence of language properties. Many, but not all such sign languages exhibit combinatoriality, which generates testable hypotheses about its source. We hypothesize that combinatoriality is the inevitable result of learning biases in cultural transmission, and that population structure explains differences across languages. We construct an agent-based model with population turnover. Bayesian learning agents with a prior preference for compressible languages (modelling a pressure for language learnability) communicate in pairs under pressure to reduce ambiguity. We include two transmission conditions: agents learn the language either from the oldest agent or from an agent in the middle of their lifespan. Results suggest that (1) combinatoriality emerges during iterated cultural transmission under concurrent pressures for simplicity and expressivity and (2) population dynamics affect the rate of evolution, which is faster when agents learn from other learners than when they learn from old individuals. This may explain its absence in some emerging sign languages. We discuss the consequences of this finding for cultural evolution, highlighting the interplay of population-level, functional and cognitive factors. This article is part of a discussion meeting issue 'The emergence of collective knowledge and cumulative culture in animals, humans and machines'.
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