In preparation

  • Keijzer, M. (in prep). Language reversion in elderly immigrants. Applied Linguistics.
  • Keijzer, M., & Kootstra, G-J (in prep). The relation between code-switching and inhibitory control in Dutch-English elderly bilinguals. Bilingualism: Language and Cognition.
  • Boon, N.A., Keijzer, M., & de Rooij, S. (submitted). Healthy aging and lexical retrieval: Geriatric patients‘ performance on verbal fluency tests. Language, Cognition, and Neuroscience.


  • Keijzer, M. & de Bot, K. (2019). Unlearning and relearning of languages from childhood to late adulthood. In: Ortega, L. & de Houwer, A. (Eds.), Handbook of Bilingualism (pp. 267-285)Cambridge: Cambridge University Press.




  • Keijzer, M. & Schmid, M.S. (2016). Individual differences in cognitive control advantages of elderly late Dutch-English bilinguals. In Aging and Bilingualism. Special issue of Linguistic Approaches to Bilingualism, 6(1/2), Edited by Ellen Bialystok and Margot D. Sullivan.  (pp. 64–85).



  • Keijzer, M.C.J. (2010). The regression hypothesis as a theoretical framework for first language attrition. Bilingualism: Language and Cognition, 13(1), 9-18.


  • Schmid, M.S. & Keijzer, M.C.J. (2009). First language attrition and reversion among older migrants. International Journal of the Sociology of Language, 2009(200), 83-101.


  • Keijzer, M.C.J. (2007). Last in First out? An investigation of the regression hypothesis in Dutch emigrants in Anglophone Canada. Utrecht: LOT dissertation series no. 163.
  • Köpke, B., Schmid, M.S., Keijzer, M. & Dostert, S. (Eds.) (2007). Language Attrition: Theoretical perspectives. Amsterdam: John Benjamins.


  • Schmid, M.S., Köpke, B., Keijzer, M.C.J. & Weilemar, L. (Eds.) (2004). First Language Attrition: Interdisciplinary perspectives on methodological issues. Amsterdam: John Benjamins.
  • Keijzer, M.C.J. (2004). First language attrition: A cross-linguistic investigation of Jakobson’s regression hypothesis. International Journal of Bilingualism, 8(3), 398-394.

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Prof. dr. Merel Keijzer

+31 50 36 37537


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