Hi, I am Marius Leckelt
Psychologist and Researcher
I hold an MSc in differential/personality psychology and am scheduled to defend my PhD in May 2018. Broadly speaking, my research focuses on the (social) consequences of personality and the underlying behavioural processes with a special interest in "dark" personality traits such as narcissism, psychopathy, and Machiavellianism.
Download my academic CV here.
Current positionsVisiting researcher working with Dr Joey Cheng University of Illinois, Urbana-Champaign
Researcher University of Münster
EducationPhD (ongoing), University of Münster
MSc Psychology of individual differences, University of Edinburgh
Media Coverage & Public Outreach
My research has been featured in several print and online media outlets. I have also given interviews for newspapers and radio stations and done some consultancy work on 'dark pesonality traits'.
WDR3 Resonanzen Radio interview on the "narcissism epidemic"
ZEIT Online "Beat the Prof" Quiz on narcissism
Gehirn und Geist Ego on the Edge
WDR 1LIVE Radio interview on Donald Trump and narcissism
SWR Aktuell Radio interview on Donald Trump and narcissism
Die ZEIT Trump only loves himself
Consulting for the German political talk show hartaberfair on differentiating narcissism from psychopathy LINK
Die WELT/WELT.de - Donald Trump – A Textbook Example Narcissist
Association for Psychological Science - New Study Busts Some Myths About Millenials
Welt am Sonntag - Why radically ruthless people get ahead
Scientific American - Why Do Narcissists Lose Popularity Over Time?
Interests & Methods
To be updated.
Interpersonal Behaviour, Its Dynamics and Consequences, Narcissism And ‘Dark Personalities’, Dominance and Status, Assessment, Data Analysis and Methodology
To be updated.
To adequately investigate the consequences of personality and the underlying processes, I follow a multimethodological research approach. That means, basing analyses on data from different sources (e.g. self- and acquaintance reports, behaviour observation) and collecting data using different methodologies (e.g. mobile apps, mobile sensing) and study designs. This includes longitudinal as well as cross sectional study designs and data collected in the laboratory, the 'real' world (field studies), and in nationally representative panel studies (e.g. German socioeconomic panel). I believe that this approach facilitates a comprehensive understanding of personality processes and their effects.
LECKELT, M., Wetzel, E., Gerlach, T. M., Ackerman, R. A., Miller, J. D., Chopik, W. J., …, Back, M. D. (in press). Validation of the Narcissistic Admiration and Rivalry Questionnaire short scale (NARQ-S) in convenience and representative samples. PSYCHOLOGICAL ASSESSMENT, 30, 86—96
Mahmoodi, J., LECKELT, M., van Zalk, M.W.H., Geukes, K., & Back, M. D. (2017). Big Data approaches in social and behavioral science: Four key trade-offs and a call for integration. CURRENT OPINION IN BEHAVIORAL SCIENCES, 18, 57—62
Grosz, M. P., Emons, W. H. M., Wetzel, E., LECKELT, M., Chopik, W. J., Rose, N., & Back, M. D. (in press). A Comparison of Unidimensionality and Measurement Precision of the Narcissistic Personality Inventory and the Narcissistic Admiration and Rivalry Questionnaire. ASSESSMENT
Nestler, S., LECKELT, M., Back, M. D., von der Beck, I., Cress, U., & Oeberst, A. (2017). The production of scientific information on the internet using the example of Wikipedia [Produktion von naturwissenschaftlichen Informationen im Internet am Beispiel von Wikipedia]. PSYCHOLOGISCHE RUNDSCHAU, 68, 172—176.
Wetzel, E., LECKELT, M., Gerlach, T. J., & Back, M. D. (2016). Distinguishing subgroups of narcissists with latent class analysis. EUROPEAN JOURNAL OF PERSONALITY, 30, 374—389.
LECKELT, M., Back, M. D., Foster, J. D., Hutteman, R., Jaeger, G., McCain, J., Twenge, J. M., & Campbell, W. K. (2016). Entering adulthood in a recession tempers later narcissism—But only in men. JOURNAL OF RESEARCH IN PERSONALITY, 60, 8—11
LECKELT, M., Küfner, A. C. P., Nestler, S., & Back, M. D. (2015). Behavioral processes underlying the decline of narcissists‘ popularity over time. JOURNAL OF PERSONALITY AND SOCIAL PSYCHOLOGY, 109, 856—871
Back, M.D., Küfner, A.C.P., & LECKELT, M. (in press). Early Impressions of Grandiose Narcissists: A Dual-Pathway Perspective. In A. D. Hermann, A. Brunell, & J. Foster (Eds.), The Handbook of trait narcissism: Key advances, research methods, and controversies. New York, NY: Springer
LECKELT, M. (in preparation). Grandiosity. In V. Zeigler-Hill & T. K. Shackleford (Eds.), ENCYCLOPEDIA OF PERSONALITY AND INDIVIDUAL DIFFERENCES. New York, NY: Springer.