Cognitive requirements of cumulative culture: teaching is useful but not essential.

ABSTRACT: The cumulative nature of human culture is unique in the animal kingdom. Progressive improvements in tools and technologies have facilitated humanity's spread across the globe and shaped human evolution, but the cognitive mechanisms enabling cultural change remain unclear. Here we show that, contrary to theoretical predictions, cumulative improvements in tools are not dependent on specialised, high-fidelity social learning mechanisms. Participants were tasked with building a basket to carry as much rice as possible using a set of everyday materials and divided into treatment groups with differing opportunities to learn asocially, imitate, receive teaching or emulate by examining baskets made by previous chain members. Teaching chains produced more robust baskets, but neither teaching nor im

SUBMITTER: Zwirner E 

PROVIDER: S-EPMC4660383 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature