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Veronika Timpe-Laughlin Author

John M. Norris is Principal Research Scientist in English language learning and assessment at the Educational Testing Service, USA.

John McE. Davis is Evaluation Specialist (Contractor, Yorktown Systems Group) at the Foreign Service Institute, U.S. Department of State.

Veronika Timpe-Laughlin is Associate Research Scientist in English language learning and assessment at the Educational Testing Service, USA.