Dr. Sophie Stallasch
Postdoctoral Researcher
- (+49)-331-977-2618
- Campus Golm
Karl-Liebknecht-Straße 24-25
Haus 24, Raum 1.72
14476 Potsdam, Germany - by appointment
career
Research Interests
Power analysis for experimental designs
Educational intervention studies
Multilevel analysis and latent modeling
Dissertation
Stallasch, S.E. (2024). Optimizing power analysis for randomized experiments: Design parameters for student achievement [Doctoral dissertation, University of Potsdam]. University of Potsdam. https://doi.org/10.25932/publishup-62939
Publications and Preprints
Stallasch, S. E., Artelt, C., Lüdtke, O., & Brunner, M. (2026). Empowering Randomized Intervention Studies on Students’ Socio-Emotional Learning Outcomes: A Database of Design Parameters for Power Analysis. PsyArXiv. https://doi.org/10.31234/osf.io/2znbq_v3
Brunner, M., Stallasch, S. E., Artelt, C., & Lüdtke, O. (2025). An individual participant data meta-analysis to support power analyses for randomized intervention studies in preschool: Cognitive and socio-emotional learning outcomes. Educational Psychology Review, 37(1), 6. https://doi.org/10.1007/s10648-024-09981-z
Stallasch, S. E., Lüdtke, O., Artelt, C., Hedges, L. V., & Brunner, M. (2024). Single- and multilevel perspectives on covariate selection in randomized intervention studies on student achievement. Educational Psychology Review, 36(4), 112. https://doi.org/10.1007/s10648-024-09898-7
Brunner, M., Stallasch, S. E., & Lüdtke, O. (2024). Empirical benchmarks to interpret intervention effects on student achievement in elementary and secondary school: Meta-analytic results from Germany. Journal of Research on Educational Effectiveness, 17(1), 119–157. https://doi.org/10.1080/19345747.2023.2175753
Brunner, M., Keller, L., Stallasch, S. E., Kretschmann, J., Hasl, A., Preckel, F., Lüdtke, O., & Hedges, L. V. (2023). Meta‐analyzing individual participant data from studies with complex survey designs: A tutorial on using the two‐stage approach for data from educational large‐scale assessments. Research Synthesis Methods, 14(1), 5–35. https://doi.org/10.1002/jrsm.1584
Stallasch, S. E., Lüdtke, O., Artelt, C., & Brunner, M. (2021). Multilevel design parameters to plan cluster-randomized intervention studies on student achievement in elementary and secondary school. Journal of Research on Educational Effectiveness, 14, 172–206. https://doi.org/10.1080/19345747.2020.1823539
Scharf, J., Becker, M., Stallasch, S. E., Neumann, M., & Maaz, K. (2020). Primäre und sekundäre Herkunftseffekte über den Verlauf der Sekundarstufe: Eine Dekomposition an drei Bildungsübergängen [Primary and secondary effects of social background across secondary education:
Decomposing effects at three educational transitions]. Zeitschrift für Erziehungswissenschaft, 23, 1251–1282. https://doi.org/10.1007/s11618-020-00981-7
Feddermann, M., Guill, K., List, M. K., Matthießen, R., Ömeroğulları, M., Stallasch, S. E., Köller, O., & Nagy, G. (2019). KESS—Skalierung der Leistungstests. [KESS—Scaling of the achievement tests]. Leibniz Institute for Science and Mathematics Education.
Short CV
Since 2025 Research associate, project BIG-GENDER Digital
Quantitative Methods in Educational Sciences, University of Potsdam, GermanySince 2024 Research associate, project CoCoaPower
Quantitative Methods in Educational Sciences, University of Potsdam, Germany2024 PhD in Psychology (University of Potsdam, Germany) 2019–2024 Predoctoral fellow, International Max Planck Research School on the Life Course (LIFE) 2018–2025 Research associate, project MULTI-DES
Quantitative Methods in Educational Sciences, University of Potsdam, Germany2017–2018 Research associate, project MILES-HuGS
Department of Educational Governance, DIPF | Leibniz Institute for Research and Information in Education,
Frankfurt am Main/Berlin, Germany2017 Master of Arts in Educational Research (Freie Universität Berlin, Germany) 2014–2016 Student assistant
Center for Research in Primary Education (ABP), Freie Universität Berlin, Germany2012 Bachelor of Education in Teaching (Technische Universität Dresden, Germany)
Scholarships
2019–2024 Fellowship at the International Max Planck Research School on the Life Course (LIFE)
Conference Talks
Stallasch, S. E., Lüdtke, O., Artelt, C., & Brunner, M. (2021, December 2–3). Wie stark hängt die Belastbarkeit der Befunde randomisierter Interventionsstudien zur Kompetenzförderung vom Zeitabstand und der Domänenpassung von Kovariaten ab? [The impact of time lags and domain fit of covariates on the design sensitivity in randomized trials] [Paper presentation]. Conference on Methodological Challenges in Empirical Educational Research in the context of the online conference year of the Society for Empirical Educational Research (digiGEBF21).
Stallasch, S. E. , Keller, L. K., & Brunner, M. (2021, December 2–3). From tools to theories: Wie nehmen statistische Modelle Einfluss auf unseren Erkenntnisgewinn? [From tools to theories: How do statistical models influence our research findings?] [Symposium]. Conference on Methodological Challenges in Empirical Educational Research in the context of the online conference year of the Society for Empirical Educational Research (digiGEBF21).
Stallasch, S. E., Lüdtke, O., Artelt, C., & Brunner, M. (2021, May 25–27). Optimizing design sensitivity in randomized trials on student achievement: Which covariates are most effective? [Paper presentation]. International Max Planck Research School on the Life Course (LIFE) Online Spring Academy.
Stallasch, S. E., Lüdtke, O., Artelt, C., & Brunner, M. (2020, October 8–9). Single- and multilevel perspectives on covariate selection when planning randomized trials on Student Achievement [Paper presentation]. International Max Planck Research School on the Life Course (LIFE) Online Fall Academy.
Stallasch, S. E., Lüdtke, O., Artelt, C., & Brunner, M. (2019, October 11–15). Multilevel design parameters for planning cluster-randomized trials on students’ competencies [Paper presentation]. International Max Planck Research School on the Life Course (LIFE) Fall Academy, Zurich, Switzerland.
Stallasch, S. E., Lüdtke, O., Artelt, C., & Brunner, M. (2019, August 12–16). Evidence for the design of cluster-randomized intervention studies on students’ competencies [Paper presentation]. European Association for Research on Learning and Instruction (EARLI) 18th Biennial Conference, Aachen, Germany.
Stallasch, S. E., Artelt, C., & Brunner, M. (2019, February 25–27). Mehrebenen-Designparameter für die Planung cluster-randomisierter Interventionsstudien zur Kompetenzförderung [Multilevel design parameters for planning cluster-randomized intervention studies on students’ competencies] [Paper presentation]. Society for Empirical Educational Research (GEBF) 7th Annual Conference, Köln, Germany.
Stallasch, S. E. & Brunner, M. (2019, February 25–27). Methodische Herausforderungen bei der Planung und Analyse von Interventionsstudien [Methodological challenges in the design and analysis of intervention studies] [Symposium]. Society for Empirical Educational Research (GEBF) 7th Annual Conference, Köln, Germany.