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Graphic complexity in writing systems

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Morin,  Olivier
The Mint, Max Planck Institute for the Science of Human History, Max Planck Society;

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Citation

Miton, H., & Morin, O. (2021). Graphic complexity in writing systems. Cognition, 214: 104771, pp. 1-15. doi:10.1016/j.cognition.2021.104771.


Cite as: https://hdl.handle.net/21.11116/0000-0008-9C93-2
Abstract
A writing system is a graphic code, i.e., a system of standardized pairings between symbols and meanings in which symbols take the form of images that can endure. The visual character of writing implies that written characters have to fit constraints of the human visual system. One aspect of this optimization lays in the graphic complexity of the characters used by scripts. Scripts are sets of graphic characters used for the written form of one language or more. Using computational methods over a large and diverse dataset (over 47,000 characters, from over 133 scripts), we answer three central questions about the visual complexity of written characters and the evolution of writing: (1) What determines character complexity? (2) Can we find traces of evolutionary change in character complexity? (3) Is complexity distributed in a way that makes character recognition easier? Our study suggests that (1) character complexity depends primarily on which linguistic unit the characters encode, and that (2) there is little evidence of evolutionary change in character complexity. Additionally (3) for an individual character, the half which is encountered first while reading tends to be more complex than that which is encountered last.