In sociolinguistic contexts where standardized languages coexist with regional dialects, the study of differential item functioning is a valuable tool for examining certain linguistic uses or varieties as threats to score validity. From an ecological perspective, this paper describes three stages in the study of differential item functioning…

New Meridian Corporation has developed the "Quality Testing Standards and Criteria for Comparability Claims" (QTS) to provide guidance to states that are interested in including New Meridian content and would like to either keep reporting scores on the New Meridian Scale or use the New Meridian performance levels; that is, the state…

In minority language revitalisation contexts, the determination of proficiency in the minoritised language is a sensitive social issue that affects citizens regardless of their linguistic background. From a psychometric perspective, since the target population is heterogeneous, competence assessment instruments must ensure score validity for each…

Content and language integrated learning (CLIL) programmes are mushrooming in many different contexts. However, research has mainly focused on their impact on foreign language learning and to a lesser extent on L1 development, whereas the number of studies undertaken in multilingual contexts in which more than two languages coexist is negligible.…

The Test of English as a Foreign Language[TM], better known as TOEFL[R], is designed to measure the English-language proficiency of people whose native language is not English. TOEFL scores are accepted by more than 6,000 colleges, universities, and licensing agencies in 130 countries. The test is also used by governments, and scholarship and…