High-fidelity copying is not necessarily the key to cumulative cultural evolution: a study in monkeys and children - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Proceedings of the Royal Society B: Biological Sciences Année : 2019

High-fidelity copying is not necessarily the key to cumulative cultural evolution: a study in monkeys and children

Résumé

The unique cumulative nature of human culture has often been explained by high-fidelity copying mechanisms found only in human social learning. However, transmission chain experiments in human and non-human primates suggest that cumulative cultural evolution (CCE) might not necessarily depend on high-fidelity copying after all. In this study, we test whether defining properties of CCE can emerge in a non-copying task. We performed transmission chain experiments in Guinea baboons and human children where individuals observed and produced visual patterns composed of four squares on touchscreen devices. In order to be rewarded, participants had to avoid touching squares that were touched by a previous participant. In other words, they were rewarded for innovation rather than copying. Results nevertheless exhibited fundamental properties of CCE: an increase over generations in task performance and the emergence of systematic structure. However, these properties arose from different mechanisms across species: children, unlike baboons, converged in behaviour over generations by copying specific patterns in a different location, thus introducing alternative copying mechanisms into the non-copying task. In children, prior biases towards specific shapes led to convergence in behaviour across chains, while baboon chains showed signs of lineage specificity. We conclude that CCE can result from mechanisms with varying degrees of fidelity in transmission and thus that high-fidelity copying is not necessarily the key to CCE.
Fichier principal
Vignette du fichier
NonCopying-ARXIV-Full.pdf (2.89 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02156588 , version 1 (19-06-2019)

Identifiants

Citer

Carmen Saldana, Joël Fagot, Simon Kirby, Kenny Smith, Nicolas Claidière. High-fidelity copying is not necessarily the key to cumulative cultural evolution: a study in monkeys and children. Proceedings of the Royal Society B: Biological Sciences, 2019, 286 (1904), pp.20190729. ⟨10.1098/rspb.2019.0729⟩. ⟨hal-02156588⟩
76 Consultations
88 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More