The Programme for the International Assessment of Adult Competencies (PIAAC) has been planned as an ongoing program of assessment. The first cycle of the assessment has involved two "rounds." The first round, which is covered by this report, took place over the period of January 2008-October 2013. The main features of the first cycle of…

Computerized adaptive testing (CAT) is a mode of testing which enables more efficient and accurate recovery of one or more latent traits. Traditionally, CAT is built upon Item Response Theory (IRT) models that assume unidimensionality. However, the problem of how to build CAT upon latent class models (LCM) has not been investigated until recently,…

Criteria had been proposed for assessing the severity of possible test security violations for computerized tests with high-stakes outcomes. However, these criteria resulted from theoretical derivations that assumed uniformly randomized item selection. This study investigated potential damage caused by organized item theft in computerized adaptive…

Developed a computerized adaptive language proficiency test for a community college in Quebec, Canada and obtained item response theory calibrations on the items from 700 to 800 administrations. Describes projected efforts to detect instances in which "cheating low" (answering incorrectly deliberately) occurs. (SLD)

A computerized adaptive test for placement of students in postsecondary French second language courses is evaluated for unidimensionality of its three component tests: reading comprehension of a short paragraph; selection of the appropriate statement in a given situation; and a "fill-in-the-blank" section. A variety of statistical…