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James D. Benson is Professor Emeritus and Senior Scholar in the English at Glendon College, York University, Toronto. He is co-author (with William S. Greaves) of You and Your Language: The Kinds of English you Use (Pergamon Press, 1984).

William S. Greaves, who died in September, 2014, was Professor Emeritus and Senior Scholar, Department of English, Glendon College, York University, Toronto.

Kazuyoshi Iwamoto is an Associate Professor in the Faculty of Foreign Studies at Kyorin University in Tokyo, Japan. After receiving his bachelor’s degree in English language from Kyorin University, he went to Central Michigan University to study TESOL for his Master’s degree. There, while completing his degree, he became interested in the relationship between grammar and phonology, and he later obtained his PhD from York University, Canada. His research interests include the relationship between systemic phonology, thematic development in English texts, paragraphing from a systemic functional perspective, and human–bonobo discourse.

Sue Savage-Rumbaugh is a psychologist and primatologist most known for her work with two bonobos, Kanzi and Panbanisha, investigating their linguistic and cognitive abilities using lexigrams and computer-based keyboards.

RESEARCH INTERESTS: • The evolutionary origins of human language • Nonhuman animal communicative behavior (esp. primate vocal and gestural communication) and the biological substrates that mediate these behaviors • Animal cognition and its biological basis • The evolution of neuroanatomical asymmetries as well as their behavioral relevance