I’m an Assistant Professor of Cognitive Psychology at the Erasmus School of Social and Behavioural Sciences. Prior to working at Erasmus University Rotterdam, I was a member of Institut Jean Nicod and the KU Leuven Laboratory of Experimental Psychology.

My work on individual differences in language use is positioned at the intersection of quantitative psychology, philosophy of language, and cognitive linguistics.

I have expertise in the fields of concepts and categories, semantics, and psychometrics.

You can contact me by e-mail at .




Under review

White, A., Malt, B. C., Verheyen, S. & Storms, G. (2020). Language specificity in monolingual and bilingual later lexical development.


Publications in International Journals

Heyman, T., Vankrunkelsven, H., Voorspoels, W., White, A., Storms, G., & Verheyen, S. (2020). When cheating is an honest mistake: A critical evaluation of the matrix task as a measure of dishonesty. Collabra: Psychology, 6(1), 12. [pdf] [data]

Verheyen, S., De Deyne, S., Linsen, S., & Storms, G. (2020). Lexicosemantic, affective, and distributional norms for 1,000 Dutch adjectives. Behavior Research Methods. [pdf] [data]

White, A., Malt, B. C., Verheyen, S., & Storms, G. (2020). Development of cross-language lexical influence: divergence, not convergence. International Journal of Bilingual Education and Bilingualism, 23, 241-243. [pdf]

Verheyen, S., Droeshout, E., & Storms, G. (2019). Age-related degree and criteria differences in semantic categorization. Journal of Cognition, 2(1): 17, 1-20. [pdf] [data] [supplementary materials]

Verheyen, S., White, A., & Egré, P. (2019). Revealing criterial vagueness in inconsistencies. Open Mind: Discoveries in Cognitive Science, 3, 41-51. [pdf] [data] [supplementary materials]

Vankrunkelsven, H., Verheyen, S., Storms, G., & De Deyne, S. (2018). Predicting lexical norms: A comparison between a word association model and text-based word co-occurrence models. Journal of Cognition, 1(1): 45, 1-14. [pdf]

Verheyen, S., Dewil, S., & Egré, P. (2018). Subjectivity in gradable adjectives: The case of tall and heavy. Mind & Language, 33, 460-479. [pdf] [data]

Verheyen, S., & Egré, P. (2018). Typicality and graded membership in dimensional adjectives. Cognitive Science, 42, 2250-2286. [pdf] [data]

White, A., Storms, G., Malt, B. C., & Verheyen, S. (2018). Mind the generation gap: Differences between young and old in everyday lexical categories. Journal of Memory and Language, 98, 12-25. [pdf] [data]

Ruytenbeek, N., Verheyen, S., & Spector, B. (2017). Asymmetric inference towards the antonym: Experiments into the polarity and morphology of negated adjectives. Glossa: A Journal of General Linguistics, 2(1): 92 1-27. [pdf] [data]

Verheyen, S., Voorspoels, W., Longenecker, J., Weinberger, D., Elvevåg, B., & Storms, G. (2016). Invalid assumptions in clustering analyses of category fluency data: Reply to Sung, Gordon, & Schretlen (2015). Cortex, 75, 255-259. [pdf]

Verheyen, S., Voorspoels, W., Vanpaemel, W., & Storms, G. (2016). Caveats for the spatial arrangement method: Comment on Hout, Goldinger, and Ferguson (2013). Journal of Experimental Psychology. General, 145, 376-382. [pdf] [supplementary materials]

De Deyne, S., Verheyen, S., & Storms, G. (2015). The role of corpus size and syntax in deriving lexico-semantic representations for a wide range of concepts. The Quarterly Journal of Experimental Psychology, 68, 1643-1664. [pdf]

De Witte, E., Satoer, D., Robert, E., Colle, H., Verheyen, S., Visch-Brink, E., & Mariën, P. (2015). The Dutch Linguistic Intraoperative Protocol: A valid linguistic approach to awake brain surgery. Brain and Language, 140, 35-48. [pdf]

Verheyen, S., Voorspoels, W., & Storms, G. (2015). Inferring choice criteria with mixture IRT models: A demonstration using ad hoc and goal-derived categories. Judgment and Decision Making, 10, 97-114. [pdf] [data]

De Deyne, S., Voorspoels, W., Verheyen, S., Navarro, D., & Storms, G. (2014). Accounting for graded structure in adjective categories with valence-based opposition relationships. Language and Cognitive Processes, 29, 568-583. [pdf]

Voorspoels, W., Storms, G., Longenecker, J., Verheyen, S., Weinberger, D., & Elvevåg, B. (2014). Deriving semantic structure from category fluency: Clustering techniques and their pitfalls. Cortex, 55, 130-147. [pdf]

White, A., Voorspoels, W., Storms, G., & Verheyen, S. (2014). Problems of reliability and validity with similarity derived from category fluency. Psychiatry Research, 220, 1125-1130. [pdf] [supplementary materials] [data]

Verheyen, S., & Storms, G. (2013). A mixture approach to vagueness and ambiguity. PLoS One, 8 (5):e63507. [pdf] [data]

Heussen, D., Voorspoels, W., Verheyen, S., Storms, G., & Hampton, J. (2011). Raising argument strength using negative evidence: A constraint on models of induction. Memory & Cognition, 39, 1496-1507. [pdf] [data]

Verheyen, S., De Deyne, S., Dry, M., & Storms, G. (2011). Uncovering contrast categories in categorization with a probabilistic threshold model. Journal of Experimental Psychology. Learning, Memory, & Cognition, 37, 1515-1531. [pdf] [data]

Verheyen, S., Heussen, D., & Storms, G. (2011). On domain differences in categorization and context variety. Memory & Cognition, 39, 1290-1300. [pdf] [data]

Verheyen, S., Stukken, L., De Deyne, S., Dry, M., & Storms, G. (2011). The generalized polymorphous concept account of graded structure in abstract categories. Memory & Cognition, 39, 1117-1132. [pdf] [data]

Vandekerckhove, J., Verheyen, S., & Tuerlinckx, F. (2010). A crossed random effects diffusion model for speeded semantic categorization decisions. Acta Psychologica, 133, 269-282. [pdf] [data]

Verheyen, S., Hampton, J., & Storms, G. (2010). A probabilistic threshold model: Analyzing semantic categorization data with the Rasch model. Acta Psychologica, 135, 216-225. [pdf] [data]

De Deyne, S., Verheyen, S., Ameel, E., Vanpaemel, W., Dry, M. J., Voorspoels, W., & Storms, G. (2008). Exemplar by feature applicability matrices and other Dutch normative data for semantic concepts. Behavior Research Methods, 40, 1030-1048. [pdf] [data]

Verheyen, S., Ameel, E., & Storms, G. (2007). Determining the dimensionality in spatial representations of semantic concepts. Behavior Research Methods, 39, 427-438. [pdf] [data]

Verheyen, S., & Storms, G. (2007). Modeling individual differences in learning hierarchically organised categories. Psychologica Belgica, 47, 219-234. [pdf] [data]


Publications in Books

Egré, P., Ripley, D., & Verheyen, S. (2019). The Sorites paradox in psychology. In E. Zardini, & S. Oms (Eds.), The Sorites Paradox (pp. 263 - 286). Cambridge, UK: Cambridge University Press. [pdf]

Van Gorp, K., & Verheyen, S. (2018). Language awareness in action: Primary school students' language practices while performing a multilingual task. In C. Hélot, C. Frijns, K. Van Gorp, & S. Sierens (Eds.), Language awareness in multilingual classrooms in Europe: From theory to practice (Contributions to the Sociology of Language 109) (pp. 235-273). Berlin, Germany: De Gruyter Mouton. [pdf] [data]

Verheyen, S., & Storms, G. (2018). Education as a source of vagueness in criteria and degree. In E. Castroviejo, L. McNally, & G. W. Sassoon (Eds.), The Semantics of Gradability, Vagueness, and Scale Structure: Experimental Perspectives (pp. 149 - 167). Berlin, Germany: Springer. [pdf] [data]

De Deyne, S., Verheyen, S., & Storms, G. (2016). Structure and organization of the mental lexicon: A network approach derived from syntactic dependency relations and word associations. In A. Mehler, A. Lücking, S. Banish, P. Blanchard, & B. Frank-Job (Eds.), Towards a theoretical framework for analyzing complex linguistic networks (pp. 47-79). Berlin, Germany: Springer. [pdf]


Conference Proceedings

Verheyen, S., & Van Gorp, K. (2018). Multilingual tasks can induce conflicted emotions about one's home language. In M. Simons, & T. F. H. Smits (Eds.), Language Education and Emotions. Proceedings of the Third International Conference on Language Education and Testing (pp. 65-72). Antwerp, Belgium: University of Antwerp. [pdf]

Smirnow, S., Maes, C., Luyten, L., & Verheyen, S. (2017). Assessment in a globalised economy: A task-based approach to assess the proficiency of Dutch in specific occupational domains. In E. G.Eugenio (Ed.), Proceedings of the ALTE 6th International Conference (pp. 26-31). Cambridge, UK: Association of Language Testers in Europe. [pdf]

White, A., Storms, G., Malt, B. C., & Verheyen, S. (2016). Between versus within-language differences in linguistic categorization. In J. Trueswell, A. Papafragou, D. Grodner, & D. Mirman, (Eds.), Proceedings of the 38th Annual Conference of the Cognitive Science Society (pp. 1955-1960). Austin, TX: Cognitive Science Society. [pdf]

De Deyne, S., Verheyen, S., Perfors, A., & Navarro, D. (2015). Evidence for widespread thematic structure in the mental lexicon. In R. Dale, C. Jennings, P. Maglio, T. Matlock, D. Noelle, A. Warlaumont, & J. Yoshimi, (Eds.), Proceedings of the 37th Annual Conference of the Cognitive Science Society (pp. 518-523). Austin, TX: Cognitive Science Society. [pdf] [supplemental materials]

Vankrunkelsven, H., Verheyen, S., De Deyne, S., & Storms, G. (2015). Predicting lexical norms using a word association corpus. In R. Dale, C. Jennings, P. Maglio, T. Matlock, D. Noelle, A. Warlaumont, & J. Yoshimi, (Eds.), Proceedings of the 37th Annual Conference of the Cognitive Science Society (pp. 2463-2468). Austin, TX: Cognitive Science Society. [pdf]

Zee, J., Storms, G., & Verheyen, S. (2014). Violations of the local independence assumption in categorization. In P. Bello, M. Guarini, M. McShane, & B. Scassellati, (Eds.), Proceedings of the 36th Annual Conference of the Cognitive Science Society (pp. 1670-1675). Austin, TX: Cognitive Science Society. [pdf]

Stukken, L., Verheyen, S., & Storms, G. (2013). Representation and criterion differences between men and women in semantic categorization. In M. Knauff, M. Pauen, N. Sebanz, & I. Wachsmuth (Eds.), Proceedings of the 35th Annual Conference of the Cognitive Science Society (pp. 3474-3479). Austin, TX: Cognitive Science Society. [pdf]

De Deyne, S., Voorspoels, W., Verheyen, S., Navarro, D., & Storms, G. (2011). Graded structure in adjective categories. In L. Carlson, C. Hölscher, & T. Shipley (Eds.), Proceedings of the 33rd Annual Conference of the Cognitive Science Society (pp. 249-254). Auxtin, TX: Cognitive Science Society. [pdf]

Verheyen, S., Ameel, E., & Storms, G. (2011). Overextensions that extend into adolescence: Insights from a threshold model of categorization. In L. Carlson, C. Hölscher, & T. Shipley (Eds.), Proceedings of the 33rd Annual Conference of the Cognitive Science Society (pp. 2000-2005). Austin, TX: Cognitive Science Society. [pdf]

Verheyen, S., & Storms, G. (2011). Does a single dimension govern categorization in natural language categories?. In A. Karmiloff-Smith, B. Kokinov, & N. Nersessian (Eds.), Proceedings of the European Conference on Cognitive Science. Sofia, Bulgaria: New Bulgarian University Press. [pdf]

Verheyen, S., & Storms, G. (2011). Towards a categorization-based model of similarity. In L. Carlson, C. Hölscher, & T. Shipley (Eds.), Proceedings of the 33rd Annual Conference of the Cognitive Science Society (pp. 614-619). Austin, TX: Cognitive Science Society. [pdf]

Verheyen, S., & Storms, G. (2011). Unidimensionality of category intension and extension. In A. Karmiloff-Smith, B. Kokinov, & N. Nersessian (Eds.), Proceedings of the European Conference on Cognitive Science. Sofia, Bulgaria: New Bulgarian University Press. [pdf]

Stukken, L., Verheyen, S., Dry, M., & Storms, G. (2009). A new investigation of the nature of abstract categories. In N. A. Taatgen, & H. van Rijn, (Eds.), Proceedings of the 31st Annual Conference of the Cognitive Science Society (pp. 2438-2443). Austin, TX: Cognitive Science Society. [pdf]

Verheyen, S., Ameel, E., Rogers, T., & Storms, G. (2008). Learning categories at different levels of abstraction. In B. C. Love, K. McRae, & V. M. Sloutsky (Eds.), Proceedings of the 30th annual conference of the cognitive science society (pp. 751-756). Austin, TX: Cognitive Science Society. [pdf]


Publications in National Journals

Van Gorp, K., & Verheyen, S. (2018, September/October/November). Meertaligheid benutten in je klas, dat kan zo! De impact van een meertalige taak op de klaspraktijk in de basisschool. [Using multilingualism to your advantage! The impact of multilingual tasks on class practices in primary school.] Schokla: School- en klaspraktijk, 60, 39-48. [pdf]

Verheyen, S., & Storms, G. (2008, January/February/March). Learning categories at different hierarchical levels. Psychologos, 23, 3-3.


Translated Books (as Editor)

Council of Europe (2017). Handleiding voor de ontwikkeling van taaltoetsen. [Manual for language test development and examining.] Leuven, Belgium: Certificaat Nederlands als Vreemde Taal. [pdf]