The proficiency of English language in Thailand is considered as a crucial factor prioritized across various sectors to enhance the population's capacities. All educational institutions, from kindergarten to tertiary levels, emphasize the improvement of English competence through diverse pedagogical approaches and the application of the Common…

English language (EL) students' English language proficiency (ELP) scores directly impact a school district's College and Career Ready Performance Index (CCRPI) score, measuring whether Georgia meets accountability requirements. English language proficiency for English language learners (ELLs) is measured by the ACCESS for ELLs assessment. The…

Language learning is context-dependent and requires learners to employ different sets of language skills to fulfill various tasks. Yet standardized English as a foreign language assessments tend to conceptualize English proficiency as a unidimensional construct. In order to distinguish English proficiency as separate context-driven constructs, I…

With multiple options to choose from, there is always a chance of lucky guessing by examinees on multiple-choice (MC) items, thereby potentially introducing bias in item difficulty estimates. Correct responses by random guessing thus pose threats to the validity of claims made from test performance on an MC test. Under the Rasch framework, the…