Positions

• 2018 - present: Professor for Differential Psychology and Assessment; 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

Degrees

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

Professional Service

• Deputy Secretary General of the European Association of Psychological Assessment (2018 - present)
• 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
• International Journal of Psychophysiology
• 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
• Zeitschrift für Politische Psychologie

Memberships

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