This article proposes and demonstrates a methodology for test score validation through abductive reasoning. It describes how abductive reasoning can be utilized in support of the claims made about test score validity. This methodology is demonstrated with a real data example of the Canadian English Language Proficiency Index Program…

Given the growing importance of English as a lingua franca, this study examines which context (classroom instruction in the students' home country vs. studying abroad in an English-speaking country) better facilitates the acquisition of English by learners of different ages: children, adolescents and adults. Participants (N = 197) completed…

Possible integrated and independent tasks were pilot tested for the writing section of a new generation of TOEFL® (Test of English as a Foreign Language™) examination. This study examines the impact of various rating designs as well as the impact of the number of tasks and raters on the reliability of writing scores based on integrated and…

We assessed whether and how the discourse written for prototype integrated tasks (involving writing in response to print or audio source texts) field tested for the new TOEFL® differs from the discourse written for independent essays (i.e., the TOEFL essay). We selected 216 compositions written for 6 tasks by 36 examinees in a field…