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New publications on the etiology of personality differences and religiousness over the lifespan!

Kandler, C., Bratko, D., Butković, A., Vukasovic-Hlupić, T., Tybur, J. M., Wesseldijk, L., de Vries, R. E., Jern, P., & Lewis, G. J. (in press). How genetic and environmental variance in personality traits shift across the lifespan: Evidence from a cross-national twin study. Journal of Personality and Social Psychology,

Richter, J., Zimmermann, J., Neyer, F. J., & Kandler, C. (in press). Do sojourn effects on personality trait changes last? A five-year longitudinal study. European Journal of Personality,

Kandler, C. (2021). A meta-analytic review of nature and nurture in religiousness across the lifespan. Current Opinion in Psychology, 40, 106-113.

Wagner, J., Orth, U., Bleidorn, W., Hopwood, C. J., & Kandler, C. (2020). Towards an integrative model of sources of personality stability and change. Current Directions in Psychological Science, 29, 438-444.

New team member

We are happy to welcome our newest team members, Nils Stöver and Sophie Walter. Nils Stöver is our new IT-support and Sophie Walter supports our team as student assistant.

Dissertation award for Dr. Alexandra Zapko-Willmes


The dissertation by Dr. Alexandra Zapko-Willmes was awarded a prize for one of the best theses by the Universitätsgesellschaft Bielefeld. Congratulations! Further information (in German) can be found here.

Project "Germany talks"


Prof. Dr. Christian Kandler analyzed a face-to-face political debate of two complete strangers as part of the project "Germany talks". Please click here to read the full article published on the Weser-Kurier website.


New member on the board of directors of ISSID

Prof. Dr. Christian Kandler was voted onto the board of directors of the International Society for the Study of Individual Differences. Congratulations!

New publication on nature and nurture of personality differences!

Read about the first results of our three generations spanning twin family study of the SPeADy project to the question: To what extent are fundamental personality traits genetically transmitted or due to different life experiences? To a surprise, genes are more important than the influence of our environment. The work appeared in the oldest European journal of psychology, which has been published since 2007 in English.

Interview with Professor Kandler about his work

Read the interview with Professor Kandler about his recently published paper UNRAVELLING THE INTERPLAY BETWEEN GENETIC AND ENVIRONMENTAL CONTRIBUTIONS IN THE UNFOLDING OF PERSONALITY DIFFERENCES FROM EARLY ADOLESCENCE TO YOUNG ADULTHOOD in the European Journal of Personality and his career as researcher.