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Predictive Structure Emerges During the Generalisation of Kin Terms to New Referents.

Maisy Hallam1, Fiona M Jordan2, Simon Kirby1

  • 1Centre for Language Evolution, University of Edinburgh, Edinburgh, UK.

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|October 2, 2025
PubMed
Summary
This summary is machine-generated.

Kinship terminology systems show predictable structure due to cognitive pressures for simplicity. This suggests humans prefer organized kin categories when learning new terms, balancing simplicity with distinctions like gender.

Keywords:
efficient communicationgeneralisationkinship terminologytransmission biases

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Area of Science:

  • Linguistics
  • Cognitive Science
  • Anthropology

Background:

  • Kinship terminology varies across languages, but constraints exist on categorizing relatives.
  • Internal co-selection, where changes in one kin generation's terms influence others, is a proposed constraint.
  • This process results in 'predictive structure,' where kin categories are predictable from others.

Purpose of the Study:

  • To quantify the predictive structure in kinship terminologies globally.
  • To investigate the cognitive basis for predictive structure in kin term generalization.
  • To understand the constraints and origins of variation in kinship terms.

Main Methods:

  • Analyzed kinship terminology systems from 731 diverse languages to measure predictive structure.
  • Conducted an artificial kin term generalization task to test cognitive preferences.
  • Compared generalization patterns against predictions based on cognitive simplicity and feature-based distinctions (e.g., gender).

Main Results:

  • Kinship terminologies across languages exhibit a significant degree of predictive structure.
  • Cognitive modeling indicated a preference for predictive structure during kin term generalization.
  • This preference is influenced by competing pressures to differentiate kin based on features like gender.

Conclusions:

  • Predictive structure in kinship terminologies likely arises from a cognitive pressure for simplicity in generalizing kin categories.
  • Human cognition favors organized and predictable kin term systems, though other factors like gender distinctions also play a role.
  • The study provides insights into the interplay between cognitive biases and cultural evolution in shaping language.