Judith Conijn, PhD

  • Lecturer
  • Test construction, psychometrics, aberrant responding to questionnaires


  • Lecturer at the Department of Clinical Psychology, Leiden University (2013 – current)
  • Psychometric consultations on a freelance basis to test publishers and research offices (2013 – current)
  • Phd project: Detecting and explaining aberrant responding in non-cognitive measurement. Department of Methodology and Statistics, Faculty of Social and Behavioral Sciences, Tilburg University (2007 – 2013).
  • Research Master in Psychological Methods, University of Amsterdam (cum laude; 2002 – 2007)

Research interests

  • Detection of aberrant response patterns on questionnaires and tests (i.e., person-fit analysis)
  • Modern psychometrics applied to the assessment of psychopathology and personality
  • Routine outcome monitoring in mental health-care
  • Correspondence between self and informant reports of personality and psychopathology


Thesis supervision (master and bachelor)

Last Modified: 05-10-2015