Curriculum Vitae
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Education
University of Koblenz-Landau, Germany
| Oct 2019 – Aug 2021 | Master of Science in Psychology with Honors (grade: 1.2) |
| Oct 2014 – Sep 2020 | Bachelor of Science in Psychology (grade: 2.0) |
Professional Activities
RPTU University Kaiserslautern-Landau (formerly University of Koblenz-Landau), Germany
| Oct 2023 – present | Associate doctoral student in the research training group Statistical Modeling in Psychology |
| Oct 2021 – present | Research Associate (Department of Psychology and Methodological Center) |
University of Koblenz-Landau, Germany
| Dec 2019 – Sep 2021 | Student research assistant (Methodological Center) |
| Jun 2017 – Feb 2018 | Student research assistant (Department of Psychology) |
International Activities
| Mar 2025 – Apr 2025 | Research Visit with colloquium presentation at the University of Basel (Department of Statistics and Data Science), Switzerland |
Teaching Experiences
University Courses, RTPU University Kaiserslautern-Landau
Multivariate statistics; undergraduate students
Psychometric theory; graduate students
Application of multivariate statistics; graduate students
Multilevel models for longitudinal data; graduate students
Workshops
Multilevel models for longitudinal data (two-day workshop for research associates)
Multilevel models and multilevel structural equation models (one-day workshop for postdocs)
Other Teaching Roles
Professional mentor for first-semester students (University of Koblenz-Landau)
Professional tutor in math, chemistry, biology, and English (Studienkreis Landau)
One year internship at a special school after attaining the university entrance diploma (Karl-Preising-Schule Bad Arolsen)
Publications
Vollbracht, D., Lischetzke, T., & Henninger, M. (2026). Detecting response styles in visual analogue scales. PsyArXiv. https://doi.org/10.31234/osf.io/xteku_v1[Preprint]
Ecker, S., Ottenstein, C., Vollbracht, D., & Lischetzke, T. (2026). Does the procedure matter? Applying a multiverse analysis approach to negative emotion differentiation. Collabra: Psychology, 12(1), 159939. https://doi.org/10.1525/collabra.159939
Vollbracht, D., Ottenstein, C., Ecker, S., & Lischetzke, T. (2026). Slider versus Likert scales: Psychometric properties in ambulatory assessment. Behavior Research Methods, 58(4), 97. https://doi.org/10.3758/s13428-026-02992-4
Knorr, A., Wegmann, E., Vollbracht, D., Brand, M., & Antons, S. (2026). Predicting moments of impaired control over addictive behaviors: Relevance of craving and inhibitory control measured in laboratory and ambulatory settings. Journal of Behavioral Addictions, 2006.2025.00102. https://doi.org/10.1556/2006.2025.00102
Schmid, A. M., Thomas, T. A., Oelker, A., Vollbracht, D., Meurer, N., Mallon, L., Diers, M., Dominick, N., Kampa, M., Wolf, O. T., Brand, M., Müller, A., & Steins-Loeber, S. (2026). Daily stress and gaming – an ambulatory assessment study in individuals with pathological, risky, and non-problematic gaming behavior. Acta Psychologica, 263, 106321. https://doi.org/10.1016/j.actpsy.2026.106321
Thomas, T. A., Schmid, A. M., Vollbracht, D., Oelker, A., Wolf, O. T., Brand, M., Steins-Loeber, S., & Müller, A. (2026). Pavlovian-to-instrumental transfer effect after devaluation as indicator of habitual behavior together with stress responsivity predicts daily use of buying-shopping platforms. Acta Psychologica, 264, 106453. https://doi.org/10.1016/j.actpsy.2026.106453
Ulitzsch, E., Vollbracht, D., Zhang, L., Jover Martínez, A., Domingue, B., Haslbeck, J. M. B., Lischetzke, T., & Vogelsmeier, L. V. D. E. (2026). Likert versus visual analogue scales in ecological momentary assessment: Initial evidence that Likert scales come with reduced capacity to sustain attentiveness. PsyArXiv. https://doi.org/10.31234/osf.io/p8fg6_v1[Preprint]
Conference presentations
Vollbracht, D, Lischetzke, T. & Henninger, M. (2025, November 28-29). Detecting Response Styles in Slider Scales [Talk]. SMiP Retreat Fall 2025, Ludwigshafen, Germany.
Vollbracht, D, Lischetzke, T. & Henninger, M. (2025, September 29 - October 01). Detecting Response Styles in Slider Scales [Conference presentation]. Conference of the DGPs Methods and Evaluation Section 2025, Berlin, Germany.
Vollbracht, D, Ottenstein, C., Ecker, S., & Lischetzke, T. (2025, May 26-28). Slider vs. Likert scales: Psychometric Properties in Ambulatory Assessment [Conference presentation]. Society for Ambulatory Assessment Conference 2025, Leuven, Belgium.
Vollbracht, D, Ottenstein, C., Ecker, S., & Lischetzke, T. (2024, September 16-19). Slider Scales vs. Radio Buttons: A Comparison of Psychometric Properties in Experience Sampling Methods [Conference presentation]. 53rd DGPs Congress / 15th ÖGP Conference, Vienna, Austria.
Vollbracht, D, Ottenstein, C., Ecker, S., & Lischetzke, T. (2024, March 12–13). Slider Scales vs. Radio Buttons: A Comparison of Psychometric Properties in Experience Sampling Methods [Conference presentation]. Multilevel Conference 2024, Utrecht, The Netherlands.
Vollbracht, D, Ottenstein, C., Ecker, S., & Lischetzke, T. (2023, June 5–7). Slider Scales or Radio Buttons? Comparing the Psychometric Properties of Slider Scales with Traditional Radio Button Scales in Ambulatory Assessment [Poster session]. SMiP Summer School 2023, Mannheim, Germany.
Vollbracht, D, Ottenstein, C., Ecker, S., & Lischetzke, T. (2023, June 26-30). Slider Scales or Radio Buttons? Comparing the Psychometric Properties of Slider Scales with Traditional Radio Button Scales in Ambulatory Assessment [Poster session]. Society for Ambulatory Assessment Conference 2023, Amsterdam, The Netherlands.
Service
Department of Psychology, RTPU University Kaiserslautern-Landau
| Jun 2025 – present | “Ombudsgremium Promotion” (doctoral ombuds committee) |
| Sep 2024 – Jan 2026 | “Prüfungsausschuss” (exam committee) |
| Mar 2023 – Jul 2023 | Appointment committee for the professorship of gerontopsychology |
| Jan 2023 – Jul 2023 | “Promovierendenvertretung” (doctoral student representative) |
| Jan 2023 – Jan 2026 | “Fachausschuss für Studium und Lehre” (committee for study and teaching) |
Research training group “Statistical Modeling in Psychology” (SMiP)
| Nov 2023 – Nov 2024 | SMiP PhD Candidates deputy spokesperson |
| Nov 2025 – present | SMiP Local Representative at RPTU University Kaiserslautern-Landau |
Psychology student body, University of Koblenz-Landau
| Jul 2020 – Jul 2021, | |
| Jul 2018 – Jul 2019, and | “Fachschaftsvorsitz” (chairman) |
| Jul 2015 – Jul 2016 | |
| Jul 2019 – Jul 2020 | “Kassenprüfung” (cash auditor) |
| Jul 2017 – Jul 2018 | “Fachschaftsratsvertretung” (representative in the student body council) |
Student parliament and student body council, University of Koblenz-Landau
| Jan 2018 – Jan 2019 | Vice President |
| Oct 2016 – Oct 2018 | “Fachschaftsratsvorsitz” (chairman) |
Awards
Five awards for excellence in teaching (2022-2025, RPTU University Kaiserslautern-Landau)
Young Researcher Award (Multilevel Conference 2024 in Utrecht, NL)
Two Open Science Awards in Gold (2023 and 2025, RPTU University Kaiserslautern-Landau)
Other Activities
| Jan 2016 – Jan 2026 | Conductor and co-lead of the university choir (RPTU University Kaiserslautern-Landau) |
| Nov 2016 – Jun 2019 | Main Organization Committee of the Psycholympia |
Ad-Hoc Reviews
Collabra: Psychology
Methodological expertise
focus: (multilevel) structural equation models, and multilevel models (for intensive longitudinal data)
experience in: generalized linear modeling, bayesian statistics, machine learning, latent class/profile analysis, IRT-models, and dynamic structural equation modeling
Programming skills
focus: R, including Quarto, R Markdown, and Shiny
experience in: Python, Mplus, Stan, JAGS, LaTeX, and css