His publications include studies of early foreign language learning, sociocultural theory and foreign and second language learning, and classroom interaction. In addition to his work in North America, he has worked in Mali and in Thailand.; G. Richard Tucker is Paul Mellon University Professor of Applied Linguistics at Carnegie Mellon University. He has published widely concerning diverse aspects of second language learning and teaching and language policy and planning. In addition to his work in North America, he has lived and worked as a Language Education advisor for the Ford Foundation in Southeast Asia and in the Middle East and North Africa.