Dr. Sascha Müller

Professional career

Since 10/2022 Substitute Professor for Differential Psychology, Institute of Psychology, University of Kassel

Since 10/2021 Research associate with Prof. Dr. Carsten Spitzer in the Department of Psychosomatic Medicine and Psychotherapy, University Medicine, University of Rostock

10/2018 - 07/2022 Research associate with Prof. Dr. Johannes Zimmermann in the Department of Differential Psychology, Institute of Psychology, University of Kassel

02/2019 - 05/2020 Research associate with Prof. Dr. Heidi Möller in the Department of Theory and Methodology of Counseling, Institute of Psychology, University of Kassel

10/2016 - 12/2018 Research Assistant with Prof. Dr. Morten Moshagen in the Department of Psychological Research Methods, Institute of Psychology and Education, University of Ulm, Germany.

01/2016 - 09/2016 Research assistant with Prof. Dr. Morten Moshagen in the Department of Psychology with a focus on research methods, Institute of Psychology, University of Kassel, Germany

Academic career

07/2019 PhD at the University of Ulm

09/2015 M.Sc. Psychology at the University of Kassel

09/2013 B.Sc. Psychology at the University of Kassel

Reviewer activities

Psychological Assessment; Assessment; European Journal of Psychological Assessment; Journal of Personality Assessment; Journal of Research in Personality; Journal of Individual Differences; Current Psychology; BMC Psychology; Plos One; Journal of Experimental Education; Journal of Applied Research in Intellectual Disabilities; Social Justice Research; Current Issues in Personality Psychology

Research Interests

• Personality Assessment
• Mentalizing / Reflective Functioning
• Response Bias / Social Desirability

Articles

Spitzer, C., Lübke, L., Müller, S., Knorr, S., & Flemming, E. (in press). Selbstberichtete Kindesmisshandlungen im Vergleich zwischen Ost- und Westdeutschland [Self-reported childhood maltreatment in comparison between East and West Germany]. Psychiatric Practice.

Zimmermann, J., Falk, C. F., Wendt, L., Spitzer, C., Fischer, F., Bach, B., Sellbom, M., & Müller, S. (2023). Validating the German version of the Personality Disorder Severity- ICD-11 Scale using nominal response models. Psychological Assessment, 35, 257-268. doi. org/10.1037/pas0001199

Spitzer, C., Lübke, L., Müller, S., Conrad, R., & Gallinat, C. (2023). State and trait dissociation in pathological skin picking. European Journal of Trauma & Dissociation, 7, 100317. doi. org/10.1016/j.ejtd.2023.100317

Flemming, E., Lübke, L., Müller, S., & Spitzer, C. (2023). Disorganized attachment and physical health [Disorganized attachment and physical health]. Psychotherapy. Advance online publication. doi. org/10.1007/s00278-023-00647-9

Müller, S., Wendt, L. P., Schicktanz, P., Hopwood, C. J., & Zimmermann, J. (2022). Development and validation of a German Interpersonal Sensitivities Circumplex (ISC-G): A self-report measure of perceived aversive behaviors of others. European Journal of Psychological Assessment. Advance online publication. doi. org/10.1027/1015-5759/a000737

Hoffmann, A., Diedenhofen, B., & Müller, S. (2022). The utility of overclaiming questionnaires depends on the fit between test content and application context. Current Psychology. Advance online publication. doi. org/10.1007/s12144-022-03934-x

Müller, S., Spitzer, C., Wichardt, P., & Kemper, F. (2022). An ultra-short test to assess sensation seeking: Psychometric evaluation of the German version of the Brief Sensation Seeking Scale (BSSS-4)]. Psychotherapy - Psychosomatics - Medical Psychology. Advance online publication. https://doi. org/10.1055/a-1896-0382

Kadur, J., Huber, D., Klug, G., Müller, S., Wendt, L. P., & Andreas, S. (2022). Passing patients' tests - But how? An analysis of therapists' helping skills in response to patient testing. Journal of Counseling Psychology, 69, 845-852. https://doi.org/10.1037/cou0000631

Flemming, E., Lübke, L., Müller, S., Lorenzen, V., & Spitzer, C. (2022). Attachment dimensions in adulthood - Relationship-specific differences and their associations with mental health [Attachment dimensions in adulthood - Relationship-specific differences and their associations with mental health]. The Psychotherapy, 67, 493-500. doi. org/10.1007/s00278-022-00610-0

Kölch, M., Lübke, L., Müller, S., Reis, O., Brähler, E., Lincke, L., & Spitzer, C. (2022). Stress due to parenthood: Psychometric evaluation of the German version of the Parental Stress Scale in the general population [Parental stress: Psychometric evaluation of the German version of the Parental Stress Scale in the general population]. Psychotherapy - Psychosomatics - Medical Psychology, 72, 445-451. https://doi.org/10.1055/a-1778-5316

Müller, S.*, Wendt, L. P.*, Spitzer, C., Masuhr, O., Back, S. N., & Zimmermann, J. (2022). A critical evaluation of the Reflective Functioning Questionnaire (RFQ). Journal of Personality Assessment, 104, 613-627. https://doi.org/10.1080/00223891.2021.1981346 [* shared first authorship].

Spitzer, C., Lübke, L., Müller, S., Lindstädt, T., & Gallinat, C. (2022). Childhood maltreatment, traumatic experiences, and posttraumatic stress disorder in pathological skin picking: An online case-control study. General Hospital Psychiatry, 78, 9-13. https://doi.org/10.1016/j.genhosppsych.2022.06.002

Spitzer, C., Lübke, L., Göbel, P., Müller, S., Krogmann, D., Brähler, E., Reis, O., Lincke, L., & Kölch, M. (2022). The assessment of general family functioning: Psychometric evaluation of the German version of the Brief Assessment of Family Functioning Scale [Assessment of general family functioning: Psychometric evaluation of the German version of the Brief Assessment of Family Functioning Scale]. Psychotherapy - Psychosomatics - Medical Psychology, 72, 292-298. https://doi.org/10.1055/a-1692-8763

Müller, S.*, Wendt, L. P.*, & Zimmermann, J. (2021). Development and validation of the Certainty About Mental States Questionnaire (CAMSQ): A self-report measure of mentalizing oneself and others. Assessment. Advance online publication. doi. org/10.1177/10731911211061280 [* shared first authorship].

Spitzer, C., Zimmermann, J., Brähler, E., Euler, S., Wendt, L. P.*, & Müller, S.* (2021). The German version of the Reflective Functioning Questionnaire (RFQ): A test-statistical review in the general population [The German version of the Reflective Functioning Questionnaire (RFQ): A psychometric evaluation in the general population]. Psychotherapy - Psychosomatics - Medical Psychology, 71, 124-131. https://doi.org/10.1055/a-1234-6317 [* shared last authorship] .

Müller, S., & Moshagen, M. (2019). True virtue, self-presentation, or both?: A behavioral test of impression management and overclaiming. Psychological Assessment, 31, 181-191. https://doi.org/10.1037/pas0000657

Müller, S., & Moshagen, M. (2019). Controlling for response bias in self-ratings of personality: A comparison of impression management scales and the overclaiming technique. Journal of Personality Assessment, 101, 229-236. https://doi.org/10.1080/00223891.2018.1451870

Müller, S., & Moshagen, M. (2018). Overclaiming shares processes with the hindsight bias. Personality and Individual Differences, 134, 298-300. https://doi.org/10.1016/j.paid.2018.06.035

Conference contributions

Müller, S., Wendt, L. P., Kerber, A., & Zimmermann, J. (2022, September 10-15). Maladaptive personality trait change during the COVID-19 pandemic in the German general population [poster presentation]. 52nd Congress of the German Psychological Society (DGPs), Hildesheim, Germany.

Wendt, L. P.*, & Müller, S.* (2022, July 14-17). Jingle fallacies in the conceptualization and assessment of mentalizing [conference talk]. 20th European Conference on Personality (ECP), Madrid, Spain. [* shared first authorship]

Wendt, L. P.*, & Müller, S.* (2021, September 12-15). Individual and group differences in political attitudes and polarization: A cross-cultural comparison between the US and Germany [conference talk]. 16th Conference of the German Psychological Society - Personality Psychology and Psychological Diagnostics (DPPD) Section, Ulm, Germany. [* shared first authorship]

Müller, S.*, Wendt, L. P.*, & Zimmermann, J. (2021, June 18-19). Being sure about oneself - but not too sure about others - is a feature of healthy personality functioning [conference talk]. 24th Annual Meeting of the Society for Interpersonal Theory and Research (SITAR), Seattle, USA. [* shared first authorship]

Müller, S., & Moshagen, M. (2019, September 16-18). Overclaiming as an effect of dispositional cognitive exploration [poster presentation]. 15th Conference of the German Psychological Society - Personality Psychology and Psychological Diagnostics (DPPD) Section, Dresden, Germany.

Müller, S., & Moshagen, M. (2018, September 15-20). Self-presentation tendencies between deception and virtue - A behavioral view of impression management [conference talk]. 51st Congress of the German Psychological Society (DGPs), Frankfurt am Main, Germany.

Müller, S., & Moshagen, M. (2017, September 4-6). Narcissistic dishonesty? [conference talk]. 16th Conference of the German Psychological Society - Social Psychology (FGSP) Section, Ulm, Germany.