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Personal profile

Personal information

After attaining my master’s degree in Work & Organizational Psychology at the Erasmus University Rotterdam (EUR) in 2005, I started my career as a test consultant at Van der Maesen & Koch HRM-advies. After 2 years, I returned to the EUR to obtain my PhD and to continue my career as an Assistant Professor. From 2012 to 2017, I was an Assistant Professor of Social and Organizational Psychology at the Vrije Universiteit Amsterdam. In 2017, I joined the HRM group at the department of Management & Organization at the Vrije Universiteit Amsterdam. 


I teach courses in HRM and Research Methods and supervise several Master thesis projects each year. I am currenlty supervising 4 PhD projects.

In 2015, I won the VU Junior Teacher of the Year Award, and in 2016 I won the DocenTalentprijs at the Faculty of Behavioral and Movement Science. 


My research focuses on the recruitment and selection of personnel. Within this field, I study topics such as situational judgment testing, overconfidence and leadership selection, impression management tactics, and adverse impact. I represent the VU in the Dutch Committee on Tests and Testing (COTAN), which is part of the Dutch Association of Psychologists (NIP) and audits the quality of psychological tests that are available for use in the Netherlands. In 2015, I joined the board of the NOA foundation (‘Stichting Nederlands Onderzoekscentrum Arbeidsmarkt en Allochtonen’). The goal of this foundation is to improve the hiring chances of ethnic minorities in the Netherlands. I am also a member of the scientific advisory board of Lagerweij. 

Ancillary activities

  • NOA | Amsterdam | Bestuurder | 2016-06-01

Ancillary activities are updated daily

Education/Academic qualification

PhD, Erasmus University, Rotterdam, Nederland.


Master, Erasmus University, Rotterdam, Nederland.


Fingerprint Fingerprint is based on mining the text of the person's scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

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Research Output 2008 2018

No evidence for a relationship between hair testosterone concentrations and 2D:4D ratio or risk taking

Ronay, R. D., van der Meij, L., Oostrom, J. K. & Pollet, T. V. 5 Mar 2018 In : Frontiers in Behavioral Neuroscience. 12, p. 1-11 11 p., 30

Research output: Contribution to journalArticle

Open Access

False consensus in situational judgment tests: What would others do?

Oostrom, J. K., Köbis, N. C., Ronay, R. & Cremers, M. 2017 In : Journal of Research in Personality. 71, December, p. 33-45

Research output: Contribution to journalArticle

Open Access

Pride before the fall: Overconfidence predicts escalation of commitment (but only when someone is watching)

Ronay, R. D., Oostrom, J. K., Lehmann-Willenbrock, N. K. & van Vugt, M. 2017 In : Journal of Experimental Social Psychology. 69, p. 13-22

Research output: Contribution to journalArticle

Updated perspectives on the international legal environment for selection

Shen, W. , Sackett, P. R. , Lievens, F. , Schollaert, E. , Van Hoye, G. , Steiner, D. D. , Rolland-Sayah, F. , Georgiou, K. , Nikolaou, I. , Tomprou, M. , Tzafrir, T. , Bamberger, P. , Bertolino, M. , Mariani, M. , Fracca-Roli, F. , Sekiguchi, T. , Onyura, B. , Yang, H. , Oostrom, J. K. , Englert, P. & 8 others Chernyshenko, O. S., Kriek, H. J., Joubert, T., Salgado, J. F., Wilhelmy, A., Koenig, C. J., Chuang, A. & Cook, M. 2017 Handbook of employee selection. Farr, J. L. & Tippins, N. T. (eds.). 2 ed. New York, p. 659-677

Research output: Chapter in Book/Report/Conference proceedingChapter

Age differences in workplace deviance: A meta-analysis.

Pletzer, J. L., Oostrom, J. K. & Voelpel, S. C. 2016

Research output: Contribution to conferencePaper

Activities 2006 2016

  • 46 Lecture / Presentation
  • 7 Membership
  • 2 Conference

How to hire whom

Oostrom, J. (Speaker)
2 Feb 2016

Activity: ProfessionalLecture / Presentation

Job Application Skills

Oostrom, J. (Invited speaker)
18 Nov 2016

Activity: ProfessionalLecture / Presentation


Oostrom, J. (Organiser), A.M.F. drs. Hiemstra (Organiser), M.P. Born (Organiser)

Activity: ScientificConference

Eneser symposium: Employee recruitment, selection, and assessment: Contemporary issues for theory and practice

Oostrom, J. (Speaker), I. Nikolaou (Speaker)

Activity: ScientificLecture / Presentation

Situational judgment testing

Oostrom, J. (Speaker)
12 Nov 2015

Activity: ProfessionalLecture / Presentation

Press / Media

Zoek nooit naar een schaap met vijf poten

T.J. Akkermans, J.K. Oostrom & S. Nijs


1 media contribution

Press/Media: Expert Comment

The Importance (or Unimportance) of Clothing in Job Interviews

J.K. Oostrom


1 item of media coverage

Press/Media: Research