The ReFlexAE corpus (Register Flexibility in Academic Education) is a longitudinal corpus of written grammatical explanations built to investigate late register development in the context of higher education. The data are collected through a longitudinal written elicitation study with German L1 students enrolled in programs for primary school teachers. According to a repeated measures design, the longitudinal written study elicits data at three time points: before and after linguistic courses and before graduation. Each participant completes the same test battery comprising four written elicitation tasks, a grammar test, a demographic questionnaire and standard psychological questionnaires assessing personal traits and motivation for learning.
