Rolling /r/ around the world

Map accompanying news coverage of our study of the link between /r/ and rough textures. The red data points represent languages that often feature /r/ in words with words for rough textures but not words for smooth textures. Blue data points, much rarer, are cases where the pattern is the reverse. The map shows that overwhelmingly, languages prefer to express rough meanings with /r/ sounds (if they have them).

Winter, B., Sóskuthy, M., Perlman, M., & Dingemanse, M. (2022). Trilled /r/ is associated with roughness, linking sound and touch across spoken languages. Scientific Reports, 12(1), 1035. doi: 10.1038/s41598-021-04311-7 PDF