Circles in nature, from mushroom gills to curled leaves

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Studies suggest that humans tend to prefer circles and curved shapes. Why is still a mystery, but researchers have put forward several hypotheses. Two have the strongest support: curves may feel safer because they lack sharp angles and they may be easier for the brain to process.¹,² ¹ Bar, M., & Neta, M. (2006). Humans prefer curved visual objects. Psychological Science, 17(8), 645–648. https://doi.org/10.1111/j.1467-9280.2006.01759.x ² Bertamini, M., Palumbo, L., & Redies, C. (2019). An advantage for smooth compared with angular contours in the speed of processing shape. Journal of Experimental Psychology: Human Perception and Performance, 45(10), 1304–1318. https://doi.org/10.1037/xhp0000668

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