Professorship: Prof. Dr Tobias Koch

since April 2020
University professor for Psychological Methodology at the Friedrich Schiller University Jena

January 2019 until March 2020
Teaching professorship at the institution of higher education in Berlin

2015 until 2019
Junior professorship at the Leuphana University of Lüneburg

February 2015 to September 2015
Junior professorship at RWTH Aachen University

Berlin 2013-2015
Research assistant

Berlin, 2013
Doctorate in Psychology

2004-2010
Studies in Psychology at the Free University of Berlin

• Analysis of panel data and intensive longitudinal data
• Multimethod research (e.g. multitrait-multimethod analysis and multirater analyses)
• Psychometrics and measurement theory
• Bayesian estimation methods
• Causal inference
• Multi-level and meta-analyses in Psychology
• Wearables and mobile sensor data

• Bee, R. M., & Koch, T. (2026). Predictive Model Evaluation in Bayesian Mixture and Hierarchical Models for Ordinal Data: A Teaching Evaluation Case Study. Journal of Educational and Behavioral Statistics, 0(0).
• Knitter, L. A., Schultze, M., & Koch, T. (2026). Optimizing the Short Dark Triad Scale Using an Ant Colony Optimization Algorithm. Assessment, 0(0).
• Bohn, M., Prein, J., Engicht, J., Haun, D., Gagarina, N., & Koch, T. (2025). PREVIC: An adaptive parent report measure of expressive vocabulary in children between 3 and 8 years of age. Behavior Research Methods, 57(3), 95. https://doi.org/10.3758/s13428-025-02615-4Externer LinkExternal link
• Knitter, L. A., Hoffmann, J., Eid, M., & Koch, T. (2025). Measuring the dark triad: a meta-analytical SEM study of two prominent short scales. Frontiers in Psychology, 15. https://doi.org/10.3389/fpsyg.2024.1469970Externer LinkExternal link
• Eid, M., Geiser, C., & Koch, T. (2025). Structural equation modeling of multiple rater data. New York: Guilford PressExterner LinkExternal link.
• Knitter, L. A., Hoffmann, J., Eid, M., & Koch, T. (2025). Measuring the dark triad: a meta-analytical SEM study of two prominent short scales. Frontiers in Psychology, 15, 1469970.
• Wester, R. A., Koch, T., Münch, F., Driver, C., Lutz, W., & Rubel, J. (2025). In search of lost time: Discrete- versus continuous-time models of working alliance and symptom severity. Journal of Consulting and Clinical Psychology, 93(1), 27–39. https://doi.org/10.1037/ccp0000929Externer LinkExternal link
• Koch, T., Jaehne, M. F., Riediger, M., Rauers, A., & Holtmann, J. (2025). Idiographic interrater reliability measures for intensive longitudinal multirater data. British Journal of Mathematical and Statistical Psychology, 00, 1–22. https://doi.org/10.1111/bmsp.70022Externer LinkExternal link
• Muench, F.F., Koch, T. Testing measurement and structural invariance in latent mediation models – A comparison of IPCR and Bayesian MNLFA. Behav Res 57, 250 (2025). https://doi.org/10.3758/s13428-025-02781-5Externer LinkExterner LinkExternal link 
• Koch, T., & Wendt, A. (2025). Theory Crises in Psychology – What Can We Learn From Structuralism? Zeitschrift Für Psychologie. Advance online publication.  https://doi.org/10.1027/2151-2604/a000600External link
• Bloszies, C., & Koch, T. (2024). Assessing Heterogeneity of Correlation Matrices in Misspecified Meta-Analytic Structural Equation Models. Structural Equation Modeling: A Multidisciplinary Journal, 1–13. DOI: 10.1080/10705511.2024.2389400External link
• Wester, R. A., Koch, T.,  Münch, F.,  Driver, C., Lutz, W., & Rubel, J. (in press). In Search of Lost Time. Discrete vs. Continuous Time Models of Working Alliance and Symptom Severity. Journal of Consulting and Clinical Psychology
• Koch, T., & Eid, M. (2024). Augmented bifactor models and bifactor-(S-1) models are identical: A comment on Zhang, Luo, Zhang, Sun & Zhang (2023). Structural Equation Modeling: A Multidisciplinary Journal. DOI: 10.1080/10705511.2024.2339387External link
• Urban, M., Koch, T., & Rothermund, K. (in press). The Implicit Association Test and its Difficulty(ies): Introducing the Test Difficulty Concept to Increase the True-Score Variance and, Consequently, the Predictive Power of Implicit Association Tests. Journal of Personality and Social Psychology.
• Schmidt, B., Böhmer, J., Schnuerch, M., Koch, T., & Michelmann, S. (2024). Post-hypnotic suggestion improves confidence and speed of memory access with long-lasting effects. Acta Psychologica, 245, 104240. DOI: 10.1016/j.actpsy.2024.104240External link
• Bohn, M., Prein, J., Koch, T., Bee, R. M., Delikaya, B., Haun, D., & Gagarina, N. (2023). oREV: An item response theory-based open receptive vocabulary task for 3- to 8-year-old children. Behavior Research Methods. DOI:10.3758/s13428-023-02169-3External link
• Oeltjen, L., Koch, T., Holtmann, J., Münch, F. F., Eid, M., & Nussbeck, F. W. (2023). A general framework for the inclusion of time-varying and time-invariant covariates in latent state–trait models. Psychological Methods, 28(5).
• Friemelt, B., Bloszies, C., Ernst, M. S., Peikert, A., Brandmaier, A. M., & Koch, T. (2023). On the performance of different regularization methods in bifactor-(S-1) models with explanatory variables—Caveats, recommendations, and future directions. Structural Equation Modeling: A Multidisciplinary Journal, 30(4), 560-573.
• Eid, M., Koch, T., & Geiser, C. (2023). Multitrait–multimethod models. Handbook of structural equation modeling, 349-266.
• Bohn, J., Holtmann, J., Luhmann, M., Koch, T., & Eid, M. (2023). Consistency and specificity of attachments to parents, friends, and romantic Partners in Emerging Adulthood. Emerging Adulthood, 11(1), 58-73.
• Koch, T., Voelkle, M. C., & Driver, C. C. (2023). Analyzing longitudinal multirater data with individually varying time intervals. Structural Equation Modeling: A Multidisciplinary Journal, 30(1), 86-104.
• Bee, R. M., Koch, T., & Eid, M. (2023). A General Theorem and Proof for the Identification of Composed CFA Models. psychometrika, 88(4), 1334-1353.
• Jahnke, S., Koch, T., Goede, L. R., Schröder, C. P., Lehmann, L., & Beelmann, A. (2022). Legal cynicism, but not depression, mediates the link between adverse environmental factors and youth’s political violence support. Psychology, Crime & Law, 28(5), 470-488.
• Koch, T., Holtmann, J., Crayen, C., & Heekerens, J. (2021). Construction of informative priors for the application of CFA-MTMM models in small samples: A model-free approach. In Advanced Multitrait-Multimethod Analyses for the Behavioral and Social Sciences (pp. 129-153). Routledge.
• Eid, M., Holtmann, J., & Koch, T. (2021). Restricted correlated trait-correlated method models for analyzing multitrait-multimethod data. In Advanced Multitrait-Multimethod Analyses for the Behavioral and Social Sciences (pp. 28-50). Routledge.
• Bohn, J., Holtmann, J., Ulitzsch, E., Koch, T., Luhmann, M., & Eid, M. (2021). Analyzing stability and change in dyadic attachment: The multi-rater latent state-trait model with autoregressive effects. Frontiers in psychology, 12, 604526.
• Bohn, J., Holtmann, J., Luhmann, M., Koch, T., & Eid, M. (2020). Attachment to parents and well-being after high school graduation: a study using self-and parent ratings. Journal of Happiness Studies, 21(7), 2493-2525.
• Holtmann, J., Koch, T., Bohn, J., & Eid, M. (2020). Multimethod Assessement of Time-Stable and Time-Variable Interindividual Differences: Introduction of a New Multitrait-Multimethod Latent State-Trait IRT Model. European Journal of Psychological Assessment, 36(6), 1024-1043.
• Koch, T., Holtmann, J., Eid, M., & West, S. G. (2020). Analyzing longitudinal multirater data with changing and stable raters. Structural Equation Modeling: A Multidisciplinary Journal, 27(1), 73-87.
• Semmler-Busch, U., & Koch, T. (2020). Wie wirken sich Migrationshintergrund und sozioökonomischer Status auf die Beurteilung nicht-kognitiver Kompetenzen aus?. Diversität und soziale Ungleichheit: Herausforderungen an die Integrationsleistung der Grundschule, 121-125.
• Koch, T., Holtmann, J., Bohn, J., & Eid, M. (2020). Multitrait-multimethod analysis. Encyclopedia of personality and individual differences, 3034-3056.
• Koch, T., Eid, M., & Lochner, K. (2018). Multitrait-Multimethod-Analysis: The Psychometric Foundation of CFA-MTMM Models. In P. Irwing, T. Booth & D. Hughes (Eds.), The Wiley Handbook of Psychometric Testing. A Multidisciplinary Reference on Survey, Scale and Test Development. Hoboken: John Wiley & Sons Ltd.
• Koch, T., Holtmann, J., Bohn, J., & Eid, M. (2018). Explaining General and Specific Factors in Longitudinal, Multimethod, and Bifactor Models: Some Caveats and Recommendations. Psychological Methods, 23(3), 505-523. DOI:10.1037/met0000146External link
• Eid, M., Geiser, C., Koch, T., & Heene, M. (2017). Anomalous Results in G-Factor Models: Explanations and Alternatives. Psychological Methods, 22(3), 541-562. DOI:10.1037/met0000083External link
• Koch, T., Schultze, M., Holtmann, J., Geiser, C., & Eid, M. (2017). A multimethod latent state-trait model for structurally different and interchangeable methods. Psychometrika, 82, 17-47.

• COSDIMH – Combining Surveys and Digital Tracking Data for Mental Health Research from a Computational Social Science Perspective
• SHERPA - Enhanced Assessment of Social and Health-Related Processes in Panel Studies through Event-Contingent Multimethod Experience Sampling Designs
• CaST – Defining and Estimating Causal Effects in Latent State–Trait Models
• ABeBi – Analyzing Rater and Method Effects in Empirical Educational Research
• DFG Project – Development of Mixed-Distribution Item Response Models for the Analysis of Cross-Classified Multirater Data and Their Application in Teaching Evaluation Research
• THInKI – Collaborative Project: Thuringian Higher Education Initiative for AI in Higher Education

• Vice director of the institute of psychology
• Vice president of the European Association of Methodology
• Action Editor of the Journal Advanced Methods and Practices in Psychological Science (AMPPS)