M.Sc. Sarah Karrasch

Sarah Karrasch studied psychology and school psychology at the University of Tübingen from 2013 - 2018. From October 2016 to December 2018, she did research as part of a research internship and her bachelor's and master's thesis in the Department of Clinical & Biological Psychology, focusing on the investigation of psychological stress and protective factors in rescue workers of the German Red Cross.  During her master thesis she was a student assistant in this research department.

Since January 2019 she is a Ph.D. student at the department of Clinical & Biological Psychology at Ulm University. Her main focus is the investigation of the efficacy of hypnotherapy on a biomolecular level.


M.Sc. Sarah Karrasch
Doctoral candidate

Sarah Karrasch
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Research interests

  • Psychological stress of rescue service employees as a result of critical incidents
  • Efficacy of hypnotherapy on a biomolecular level
  • Comparison of trauma-focused therapy methods (cognitive-behavioural vs. psychodynamic) for a better understanding of post-traumatic stress disorder after childhood maltreatment


  • Psychological stress and protective factors among rescue service employees of the German Red Cross
  • Improving treatment and understanding of post-traumatic stress disorders associated with child abuse in adults

Further education & workshops

  • Werkstattsymposium „Spannungsfeld Mensch und Emotionen im Arbeitskontext“, Initiative Gesundheit und Arbeit & Technische Universität, Juli 13-17, Dresden, Deutschland.
  • Training as clinical hypnotherapist at the Klingenberg Institute for Clinical Hypnosis under Prof. Bongartz, January-November 2019, Constance, Germany.
  • Workshop "Learning from trauma and loss in evidence based treatment" in the16th European Society of Traumatic Stress Studies Conference, July 13, Rotterdam, Netherlands.


Winter term 2020/2021

  • Journal Club - Current research in clinical psychology and psychotherapy with a focus on relaxation techniques

Winter term 2019/2020

  • Seminar "Dissociation - Aetiology, biological correlates and therapy" (Master, Psychology)

Summer term 2019 & Summer term 2020

  • Seminar "Relaxation Methods and Hypnosis in Clinical Psychology and Psychotherapy"(Bachelor, Psychology)


Karrasch, S., Bongartz W., Gumpp, A. M., Kolassa I. -T. (in press). The effect of hypnosis on parameters of the immune system. Zeitschrift für Klinische Psychologie und Psychotherapie.

Karrasch, S., Bongartz W., Gumpp, A. M., Kolassa I. -T. (in press). Strengthening the immune system? Biomolecular effects of hypnosis. SUGGESTIONEN.

Karrasch, S., Hitzler, M., Behnke, A., Tumani, V., Kolassa, I.-T., Rojas, R. (in press). Chronic and Traumatic Stress Among Emergency Medical Service Personnel: A Narrative Review on Vulnerability Factors, Resilience, and Intervention. Zeitschrift für Klinische Psychologie und Psychotherapie.

Behnke, A., Karabatsiakis, A., Krumbholz, A., Karrasch, S., Schelling, G., Kolassa, I. T., & Rojas, R. (2020). Associating Emergency Medical Services personnel’s workload, trauma exposure, and health with the cortisol, endocannabinoid, and N-acylethanolamine concentrations in their hair. Scientific reports, 10(1), 1-10.

Karrasch, S., Hitzler, M., Gumpp, A. M., Karabatsiakis, A., & Kolassa, I. T. (2020). Molekulartoxische Folgen von chronischem und traumatischem Stress und deren Reversibilität durch entspannungs-und achtsamkeitsbasierte Interventionen. Verhaltenstherapie, 30(1), 28-42.

Behnke, A., Rojas, R., Karrasch, S., Hitzler, M., & Kolassa, I. T. (2019). Deconstructing traumatic mission experiences: Identifying critical incidents and their relevance for the mental and physical health among emergency medical service personnel. Frontiers in Psychology, 10, 2305.


Karrasch, S., Hitzler, M., Gumpp, A. M., Karabatsiakis, A., & Kolassa, I. T. (2020). Molecular-Toxic Consequences of Chronic and Traumatic Stress and Their Reversibility through Mind-Body Interventions. Verhaltenstherapie, 1-15.