Motor constraints influence cultural evolution of rhythm. Issue 1937 (28th October 2020)

• Record Type: Journal Article
• Authors: Miton, Helena; Wolf, Thomas; Vesper, Cordula; Knoblich, Günther; Sperber, Dan
• Is Part Of: Proceedings. Volume 287:Issue 1937(2020)
• Publication Date: 2020-10-28
• Subjects: cultural attraction -- cultural evolution -- rhythm -- material constraints -- cultural transmission experiment -- transmission chain; Biology -- Periodicals; 570.5
• DOI: 10.1098/rspb.2020.2001
• Languages: English
• ISSNs: 0962-8452

Abstract

Abstract : While widely acknowledged in the cultural evolution literature, ecological factors—aspects of the physical environment that affect the way in which cultural productions evolve—have not been investigated experimentally. Here, we present an experimental investigation of this type of factor by using a transmission chain (iterated learning) experiment. We predicted that differences in the distance between identical tools (drums) and in the order in which they are to be used would cause the evolution of different rhythms. The evidence confirms our predictions and thus provides a proof of concept that ecological factors—here a motor constraint—can influence cultural productions and that their effects can be experimentally isolated and measured. One noteworthy finding is that ecological factors can on their own lead to more complex rhythms.