He obtained his PhD in Foreign Language and ESL Education with a minor in language testing from the University of Iowa (USA). He previously worked for American College Testing (ACT, Inc.) where he was part of the Workkeys assessment team. In addition, he has been working as an assessment and evaluation consultant and has participated in a number of test development projects in many parts of the world. His research interests include writing assessment, reading-writing connections, assessment literacy, and test validation. He serves on the editorial boards of Journal of Language Testing, Language Assessment Quarterly, and Assessing Writing. His book entitled Assessment Myths, co-authored with Lia Plakans, was published by the University of Michigan Press in 2015.