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The Logic of Fashion Cycles

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  • Alberto Acerbi
  • Stefano Ghirlanda
  • Magnus Enquist

Abstract

Many cultural traits exhibit volatile dynamics, commonly dubbed fashions or fads. Here we show that realistic fashion-like dynamics emerge spontaneously if individuals can copy others' preferences for cultural traits as well as traits themselves. We demonstrate this dynamics in simple mathematical models of the diffusion, and subsequent abandonment, of a single cultural trait which individuals may or may not prefer. We then simulate the coevolution between many cultural traits and the associated preferences, reproducing power-law frequency distributions of cultural traits (most traits are adopted by few individuals for a short time, and very few by many for a long time), as well as correlations between the rate of increase and the rate of decrease of traits (traits that increase rapidly in popularity are also abandoned quickly and vice versa). We also establish that alternative theories, that fashions result from individuals signaling their social status, or from individuals randomly copying each other, do not satisfactorily reproduce these empirical observations.

Suggested Citation

  • Alberto Acerbi & Stefano Ghirlanda & Magnus Enquist, 2012. "The Logic of Fashion Cycles," PLOS ONE, Public Library of Science, vol. 7(3), pages 1-9, March.
    • Handle: RePEc:plo:pone00:0032541
    DOI: 10.1371/journal.pone.0032541
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    1. R Alexander Bentley, 2008. "Random Drift versus Selection in Academic Vocabulary: An Evolutionary Analysis of Published Keywords," PLOS ONE, Public Library of Science, vol. 3(8), pages 1-7, August.
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