Rating scales that language testers design should be tailored to the specific test purpose and score use as well as reflect the target construct. Researchers have long argued for the value of data-driven scales for classroom performance assessment, because they are specific to pedagogical tasks and objectives, have rich descriptors to offer useful…

This paper explores the views of nursing and medical domain experts in considering the standards for a specific-purpose English language screening test, the Occupational English Test (OET), for professional registration for immigrant health professionals. Since individuals who score performances in the test setting are often language experts…

Alderson (2005) suggests that diagnostic tests should identify strengths and weaknesses in learners' use of language and focus on specific elements rather than global abilities. However, rating scales used in performance assessment have been repeatedly criticized for being imprecise and therefore often resulting in holistic marking by raters…