The computer-based College English Test-Spoken English Test (CET-SET) in China incorporates interactional competence in its construct by using a non-face-to-face paired discussion task. To build validity arguments for this unique computer-mediated interactive task, the present study investigated the impact of delivery mode on test performance in…

This study explores the extent to which topic and background knowledge of topic affect spoken performance in a high-stakes speaking test. It is argued that evidence of a substantial influence may introduce construct-irrelevant variance and undermine test fairness. Data were collected from 81 non-native speakers of English who performed on 10…