• 2018 - present: Professor for Applied Psychology: Differential Psychology and Assessment; Head of the Center for Psychological Assessment (starting 09/2018), HSD University of Applied Sciences, Cologne, Germany
  • 2015 - 2017: Senior Researcher, Institute of Cognitive Science and Assessment (COSA); Collaborative Researcher, Luxembourg Centre for Educational Testing (LUCET), University of Luxembourg, Luxembourg
  • 2012 - 2015: Head of Department, Department of Psychotherapy Exams, Institute for Medical and Pharmaceutical Proficiency Assessment, Mainz, Germany 
  • 2009 - 2012: Senior Researcher, Survey Design and Methodology, GESIS – Leibniz Institute for the Social Sciences, Mannheim, Germany
  • 2006 - 2009: Research and Teaching Assistant, Institute of Psychology, Department Personality Psychology and Assessment, University of Mainz, Germany



  • Dr. phil. (PhD equivalent) in Psychology, University of Mainz, Germany (2010)
  • Diploma in Psychology (MSc equivalent), University of Marburg, Germany (2005)


Professional Service

  • Article Editor for SAGE Open (2017)
  • Member of the Executive Committee of the European Association of Psychological Assessment (2014 - present)
  • Project Manager PISA 2018 Item development (Luxembourg)
  • Associate Editor for the European Journal of Psychological Assessment (2015 - 2017)
  • Consulting Editor for the European Journal of Psychological Assessment (2013 - 2015)
  • Guest Editor for a Special Issue of the Journal of Individual Differences "Measuring psychological constructs with short scales: Positive outlooks and caveats" (Ziegler, Kemper, & Kruyen, 2014) [Editorial]
  • Guest Editor for a Special Issue of "Methoden, Daten, Analysen (mda)" on Short Scales for the Measurement of Psychological Constructs in Surveys (Rammstedt, Kemper, & Schupp, 2013) [Editorial]
  • Member of the Task Force Quality Standards of the German Data Forum (2011 - 2012)


Ad Hoc Reviewer

  • Anxiety, Stress, & Coping
  • Assessment
  • Australian Journal of Psychology
  • Biological Psychology
  • Diagnostica
  • Educational Research Review 
  • European Journal of Psychological Assessment
  • Journal of Individual Differences
  • Journal of Official Statistics
  • Journal of Personality Assessment
  • Journal of Research in Personality
  • Methoden, Daten, Analysen (mda)
  • Measurement Instruments for the Social Sciences
  • Perceptual & Motor Skills
  • Psihologija
  • Psychoneuroendocrinology
  • The Open Psychology Journal
  • Zeitschrift für Gesundheitspsychologie



  • German Psychological Society (Deutsche Gesellschaft für Psychologie, DGPs)
  • European Association of Psychological Assessment (EAPA)
  • International Test Commission (ITC)
  • Frankfurt Forum for Interdisciplinary Ageing Research (FFIA)



My Profiles at