Modeling the emergence of universality in color naming patterns

Details Modeling the emergence of universality in color naming patterns Modeling the emergence of universality in color naming patterns

2009-08-06

arxiv.org/abs/0908.0775v2

Proc. Natl. Acad. Sci. USA 107, 2403 (2010)

Physics

Physics and Society

Supplementery Information available here http://www.pnas.org/content/107/6/2403/suppl/DCSupplemental

Scientific paper

10.1073/pnas.0908533107

The empirical evidence that human color categorization exhibits some universal patterns beyond superficial discrepancies across different cultures is a major breakthrough in cognitive science. As observed in the World Color Survey (WCS), indeed, any two groups of individuals develop quite different categorization patterns, but some universal properties can be identified by a statistical analysis over a large number of populations. Here, we reproduce the WCS in a numerical model in which different populations develop independently their own categorization systems by playing elementary language games. We find that a simple perceptual constraint shared by all humans, namely the human Just Noticeable Difference (JND), is sufficient to trigger the emergence of universal patterns that unconstrained cultural interaction fails to produce. We test the results of our experiment against real data by performing the same statistical analysis proposed to quantify the universal tendencies shown in the WCS [Kay P and Regier T. (2003) Proc. Natl. Acad. Sci. USA 100: 9085-9089], and obtain an excellent quantitative agreement. This work confirms that synthetic modeling has nowadays reached the maturity to contribute significantly to the ongoing debate in cognitive science.

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