Augmenting a colour lexicon

Abstract Languages differ markedly in the number of colour terms their lexicons. The Himba, for example, a remote culture Namibia, were reported 2005 to have only 5-colour term language. We re-examined naming using novel computer-based method drawing colours from across gamut rather than saturated shell space that is norm cross-cultural research. Measuring confidence communication, Himba now seven terms, or more properly categories, are independent other terms. Thus, we report first augmentation major namely green and brown, lexicon any A critical examination supervised unsupervised machine-learning approaches two datasets collected at different periods shows perceptual mechanisms can, most, some extent explain category formation cultural factors, such as linguistic similarity driving force augmenting effective communication.