New Book: Comprehensibility in Language Assessment

There is a new book from the British Council authored by Parvaneh Tavakoli and Sheryl Cooke called “Comprehensibility in Language Assessment”.  You can download the PDF at no cost.  The book describes some of the current approaches to assessing comprehensibility (sometimes feature driven, other times based on a holistic sense of understanding) and suggests new approaches that might improve language testing in the future. Compelling stuff.