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 de Bot, van Geert, and Lowie.

[citation needed] Verspoor has published journal articles and edited several books on different areas of linguistics, including second language development, effects of bilingual education, effects of cognitive insights into second language development, cognitive linguistic approach to English complementation.

Between 2005 and 2009 she was appointed as the study advisor and coordinator MA program Applied Linguistics-Teaching English as a foreign language.

[3] She is one of the members of the Solidarity Award Committee of the International Association of Applied Linguistics along with Kees de Bot and Rosa Manchón.

[5] In July 2020, a book, entitled Usage-based Dynamics in Second Language Acquisition, was published to honour her work in the field of applied linguistics.

[10] In 2017 Verspoor's first article was published in which she and her colleagues applied the Hidden Markov Model to simulate language development.