Betty Lou Leaver is associate dean of Global Education and dean of New York Institute of Technology campuses in Jordan. She has introduced task-based instruction into several foreign language programs, including the Defense Language Institute, the American Global Studies Institute, NASA, the American Language Center in Tashkent, Uzbekistan, and the American Language Center in Chisinau, Moldova. She has also provided assistance to programs using TBI in Brazil, Turkmenistan, Japan, and Korea.

Jane Willis is a visiting fellow at Aston University, Birmingham, UK, where she taught in the Masters in TESOL/TESP distance learning programs, specializing in course and materials design and lexical studies. She has taught English to European and Asian students and has educated teachers in Africa, Cyprus, Iran, and Southeast Asia. She began experimenting with task-based English teaching in 1982 in the British Council Teaching Centre in Singapore. She is the author of A Framework for Task-based Learning and coauthor of English for Primary Teachers.