The question of how humans have ascribed a finite vocabulary to the multitude of perceivable colors has been long studied, and consistent patterns have emerged, even across wildly divergent languages and cultures. Yet slight differences among languages persist, and what is less understood is how the differing communicative needs of local cultures drive those differences. Do some cultures need to talk about certain colors more than others, and how does that shape their language?
In a new study, researchers led by Colin Twomey, a postdoc in Penn’s MindCORE program, and Joshua Plotkin, a professor in the School of Arts & Sciences’ Biology Department, address these questions, developing an algorithm capable of inferring a culture’s communicative needs—the imperative to talk about certain colors—using previously collected data from 130 diverse languages.
Their findings underscore that, indeed, cultures across the globe differ in their need to communicate about certain colors. Linking almost all languages, however, is an emphasis on communicating about warm colors—reds and yellows—that are known to draw the human eye and that correspond with the colors of ripe fruits in primate diets.
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