Comprehensibility, or the extent to which a listener understands L2 speakers' spoken output/performance, is a fundamentally important aspect of communication, and a construct the language testing discipline has been interested in for a few decades. Comprehensibility is considered central to successful communication as it highlights the listener's perceptions of the level of difficulty involved in understanding a speaker. Despite the crucial role it plays in communication and the contribution it makes towards the assessment of spoken language ability, comprehensibility has mostly been assessed holistically in language tests, if at all, with little reference to an analytic framework in which comprehensibility can be objectively analysed and reliably assessed.
This lack is addressed in this research-oriented and evidence-based monograph which provides an analytic framework for understanding, defining and assessing comprehensibility. The authors argue that conceptualising comprehensibility as a multidimensional construct and adopting a broader perspective to understanding and analysing it for communication purposes would benefit the fields of second language assessment and second language acquisition.
Parvaneh Tavakoli is a Professor of Applied Linguistics at the University of Reading. Parvaneh's main research interest lies in the interface of second language acquisition, language teaching, and language testing. Parvaneh has led several international research projects investigating the effects of task and task design on performance, acquisition, assessment and policy in different contexts. Her research has been published in prestigious peer-reviewed journals and books.
Sheryl Cooke is an Assessment Researcher with the British Council Assessment Research Group. Sheryl has 20 years' experience in various areas of language assessment and her qualifications include an MA Language Testing (Lancaster University) and an MA Linguistics (SOAS). She is currently a PhD candidate at the University of Jyväskylä (Finland), focusing on the assessment of spoken English and the potential implications for English as a Lingua Franca. Her research interests include assessment of speaking, the use of new technologies in language testing and the ethics of language assessment in the global context.