Language proficiency testing serves an important function of classifying examinees into different categories of ability. However, misclassification is to some extent inevitable and may have important consequences for stakeholders. Recent research suggests that classification efficacy may be enhanced substantially using computerized adaptive…

The Modern Language Aptitude Test (Paper-and-Pencil Version, henceforth, the MLAT) measures "an individual's ability to learn a foreign language." It targets English-speaking adults (over Grade 9) who are literate. The test has only one form, which has not changed since it was first published by the Psychological Corporation in 1959. The test can…