Hannah S. Sarvasy is Senior Researcher at the MARCS Institute for Brain, Behaviour and Development at Western Sydney University. Her research combines fieldwork on Papuan, Atlantic and other languages, child language acquisition research, and psycholinguistic experimentation. She is the author of A Grammar of Nungon: A Papuan Language of Northeast New Guinea (Brill, 2017), among other volumes, and led a Nungon-speaking team to build the Nungon Child Speech Corpus, one of the largest digitized corpora of child-caregiver interactions in a Papuan language. She has published multiple studies on the grammar, history, acquisition, and processing of clause chains and switch-reference marking.
Alexandra Y. Aikhenvald is Professor, Australian Laureate Fellow, and Head of Research Cluster 'Language and well-being' at the Jawun Centre, Central Queensland University. She is a major authority on languages of the Arawak family, from northern Amazonia, and has written grammars of Bare (1995) and Warekena (1998), plus A Grammar of Tariana, from Northwest Amazonia (CUP, 2003) and The Manambu Language of East Sepik, Papua New Guinea (OUP, 2008; paperback 2010), in addition to essays on various typological and areal features of South American and Papuan languages and typological issues including evidentials, classifiers, serial verbs, and language and well-being.