The publication of the 1996 anthology "Rethinking Linguistic Relativity" edited by Gumperz and Levinson began a new period of linguistic relativity studies that focused on cognitive and social aspects. The book included studies on the linguistic relativity and universalist traditions. Levinson documented significant linguistic relativity effects in the linguistic conceptualization of spatial categories between languages. For example, men speaking the Guugu Yimithirr language in Queensland gave accurate navigation instructions using a compass-like system of north, south, east and west, along with a hand gesture pointing to the starting direction.