Choosing the right word to express meaning can be a challenge for English language learners (ELLs) in both English as second language and English as a foreign language settings, persisting through all proficiency levels in productive language use for several reasons. In order to make correct word choices, ELLs must master the various aspects of a…

This dissertation explored whether unnecessary linguistic complexity (LC) in mathematics and biology assessment items changes the direction and significance of differential item functioning (DIF) between subgroups emergent bilinguals (EBs) and English proficient students (EPs). Due to inconsistencies in measuring LC in items, Study One adapted a…