Gillian Wigglesworth is Redmond Barry Distinguished Professor at the University of Melbourne, Australia, and Chief Investigator for the Australian Research Council Centre of Excellence for the Dynamics of Language. She has worked extensively with Indigenous children growing up in remote communities in Australia, largely in the Northern Territory. 

Jane Simpson is Professor of Indigenous Linguistics at the Australian National University, Canberra, Australia, and Deputy Director of the Australian Research Council Centre of Excellence for the Dynamics of Language. Her research focuses on the structure and use of several Australian Aboriginal languages (Warumungu, Kaurna and Warlpiri), as well as English.