As a high-stakes standardized test, IELTS is expected to have comparable forms of test papers so that test takers from different test administration on different dates receive comparable test scores. Therefore, this study examined the text difficulty and task characteristics of four parallel academic IELTS reading tests to reveal to what extent…

Effective test preparation for high-stakes English language tests is crucial for candidates whose futures depend on attaining a particular score. An increasing number of studies have investigated the role of test preparation; however, these studies have been exclusively conducted in individual contexts and countries around the world. This study…

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…