Alexandra Y. Aikhenvald is Australian Laureate Fellow, Distinguished Professor, and Director of the Language and Culture Research Centre, James Cook University, North Queensland. She is an expert on languages and cultures of Amazonia and the Sepik region of Papua New Guinea, in addition to linguistic typology, general linguistics and several other areas.
R. M. W. Dixon is Professor and Deputy Director of the Language and Culture Research Centre at James Cook University, North Queensland and a Fellow of the British Academy. He has published grammars of a number of Australian languages.