Lyle Bachman is Professor of Applied Linguistics and TESL at the University of California, Los Angeles. His authorship includes Language Testing in Practice, and Fundamental Considerations in Language Testing, both published by Oxford University Press. He has also published numerous articles in the area of language testing and evaluation. His current professional interests include the development and validation of tests of language ability, the technologies of test design and development and the interfaces between language testing research and other areas of applied linguistic research.