She is currently an Associate Professor of Developmental psychology at the Faculty of Behavioural and Social Sciences of the University of Groningen, Netherlands.
She is renowned for her work on developmental psychology and second language acquisition and the application of Complex Dynamic Systems Theory to study second language development.
She is one of the members of the "Dutch School of Dynamic Systems" who proposed to apply time-series data to study second language development along with van Geert, Lowie, de Bot and Verspoor.