Member of PhD commission of Janneke van der Loo, - Tilburg University, Tilburg, The Netherlands
Mastering the art of academic writing: Comparing the effectiveness of observational learning and learning by doing (supervisors: prof. dr. Emiel Kramer & dr. M.A.A. van Amelsvoort, Tilburg University, The Netherlands - February 2022)

Member of PhD commission of Yu (Terry) Tian, - Georgia State University, Georgia, USA
Associations between the dynamics of the writing process and argument construction in L1 and L2 undergraduate writers (supervisor: prof. dr. Scott Crosley, Georgia State University, USA - October 2021)

Member of PhD commission of Anne Sætersdal Myklestad, - Western Norway University of Applied Sciences, Bergen, Norway
Writing in L1 Norwegian and L2 English: A study of processes and products related to young writers' text production in the Norwegian school context (supervisors: prof. dr. Monika Bader & Prof. dr. Sandra Halverson, Western Norway University of Applied Sciences, Norway - November 2020)

Member of PhD commission of Nina Vandermeulen, University of Antwerp, Belgium
Synthesis writing in upper-secondary education: From a baseline of texts and processes to process-oriented feedback (promotors: prof. dr. Gert Rijlaarsdam & Prof. dr. Mariëlle Leijten, University of Antwerp, Belgium - September 2020)

Member of PhD commission of Louise Nell, Utrecht University - The Netherlands
Multichannel pension communication: An integrated perspective on policies, practices and literacy(promotors: prof. dr. Leo Lentz & Henk Pander Maat, Utrecht University, The Netherlands - May 2017)

Member of PhD commission of Elise Drijbooms, Radboud University, Nijmegen - The Netherlands & University of Antwerp - Belgium
Cognitive and Linguistic Factors in Writing Development (promotors: prof. dr. J. Verhoeven, Radboud University, The Netherlands, Prof. dr. D. Alamargot, University of Paris Est & Prof. dr. M. Leijten, University of Anwterp- April 2016)

Member of PhD Commission of Nina Verhaert, University of Antwerp, Belgium
The impact of lexical and sublexical homophony during spelling and reading homophone verbs. Promotors: prof. dr. Dominiek Sandra & Walter Daelemans

Member of PhD commission of Vasiliki Gargalianou , University of Antwerp, Belgium
The role of language in business settings (promotor: prof. dr. A. Wittelostuijn, Tilburg University, The Netherlands - September 2015)

Chair of PhD commission of Ann Overbergh, University of Antwerp, Belgium
New technology, new media, and emerging audiovisual formats and genres in East-Africa. (promotors: prof. dr. Annick Schramme & prof. dr. Arjen Van Witteloostuijn) - November 2014)

Member of PhD commission of Milou de Smet, Open University, Heerlen, The Netherlands
Composing the unwritten text: Effects of electronic outlining of students' argumentative writing (supervisors: prof. dr. P.A. Kirschner & Prof.dr. F. Brand-Gruwel - January 2014)

Member of the PhD committee of Sanne Elling, University of Utrecht, The Netherlands
Evaluation of municipal websites: Development and Validation of expert-focused and user-focused evaluation methods(promotor: prof. dr. Leo Lentz, University of Utrecht, The Netherlands & prof. dr. Menno de Jong, University of Twente, The Netherlands- November 2012)

Member of the PhD committee of Daphne van Weijen, University of Utrecht, The Netherlands
Writing processes, text quality, and task effects: Empirical studies in first and second language writing.
(promotor: prof. dr. H. van den Berghe, prof. dr. G. Rijlaarsdam & prof. dr. T. Sanders, University of Utrecht | University of Amsterdam - January 2009)

Member of the PhD committee of Maaike van den Haak, University of Twente, The Netherlands
Comparison of concurrent think aloud protocols, retrospective think-aloud protocols, and constructive interaction for usability testing.
(promotor: prof. dr. Peter Jan Schellens, Radboud University Nijmegen & Menno de Jong, University of Twente - June 2008)

Member of the PhD committee of Joeri De Haes, University of Antwerp, Belgium
Investigating online consumer behaviour: the impact of Internet shopping site design on emotional and cognitive consumer responses
(promotors: prof. dr. A. Lievens & prof. dr. W. Van Waterschoot, University of Antwerp, Department of Marketing, Belgium - November 2006)

Member of the PhD committee of Julien Perrez, Université Catholique de Louvain (Louvain-la-Neuve), Belgium.
Etude linguistique et psycholinguistique des marqueurs discursifs en langue maternelle et en langue seconde. [On the combination of corpus-based and experimental methodologies in the study of causal, adversative and metadiscourse connectives in L1 and L2 text comprehension and production]
(promotor: prof. dr. L. Degand, Université Catholique de Louvain (Louvain-la-Neuve), Belgium - November 2006)

Member of the PhD committee of Daphne van Weijen, University of Utrecht, The Netherlands
Writing processes, text quality, and task effects: Empirical studies in first and second language writing.
(promotor: prof. dr. H. van den Berghe, prof. dr. G. Rijlaarsdam & prof. dr. T. Sanders, University of Utrecht | University of Amsterdam - January 2009)

Member of the PhD committee of Maaike van den Haak, University of Twente, The Netherlands
Comparison of concurrent think aloud protocols, retrospective think-aloud protocols,tocols, and constructive interaction for usability testing.
(promotor: prof. dr. Peter Jan Schellens, Radboud University Nijmegen & Menno de Jong, University of Twente - reign language: A comparison of conceptual and linguistic processes in Dutch and English (promotor: prof. dr. J. Hulstijn, University of Amsterdam, The Netherlands - November 2005)