Sophie Stallasch

LIFE Berlin

External LIFE Fellow from 2019 to 2024, University of Potsdam

Dr. phil.

Dissertation completed in February 2024

Optimizing Power Analysis for Randomized Experiments: Design Parameters for Student Achievement Full text

(Advisors: Martin Brummer & Oliver Lüdtke)

Selected Publications

Stallasch, S. E., Lüdtke, O., Artelt, C., Hedges, L. V., & Brunner, M. (in press). Single- and multilevel perspectives on covariate selection in randomized intervention studies on student achievement. Educational Psychology Review. Preprint:

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.

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(1), 172–206.

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