Although a wealth of literature exists studying the effect of sponsor characteristics on self-reports of mental health, little work assesses a related but potentially powerful effect: a context comprehension effect, that is, a change in the respondent's interpretation of a survey question, given the concept elicited by the interviewer. Further,…

This article examines the intersection of psychometrics and sociolinguists in the testing of English language learners (ELLs); it discusses language, dialect, and register as sources of measurement error. Research findings show that the dialect of the language in which students are tested (e.g., local or standard English) is as important as…

Item parameter estimates vary for a variety of reasons, including estimation error, characteristics of the examinee samples, and context effects (e.g., item location effects, section location effects, etc.). Although we expect variation based on theory, there is reason to believe that observed variation in item parameter estimates exceeds what…