The purpose of second (or foreign) language classroom research is to answer important questions about the learning and teaching of foreign languages. This kind of research collects data from genuine language classrooms or from experimental settings sometimes established to replicate what takes place in the classroom. Classroom research can focus…

Over the last 15 years or so, research into measurement error has begun to consider not just whether the test items fit, but whether the people who answer the items fit. Attempts to systematically identify people who do not fit the typical pattern have led to several "person-fit statistics." This digest describes the need for such…

The work of the National Research Center on Student Learning (CSL) is described. The CSL, one of 23 national centers funded by the Office of Educational Research and Improvement, is an integral part of the Learning Research and Development Center of the University of Pittsburgh (Pennsylvania). The CSL conducts interdisciplinary research that…