Research Methods

Research on quantitative and experimental methods used in education research.


Sims, S., Anders, J., Inglis, M., Lortie-Forgues, H., Styles, B., & Weidmann,
B. (2026). Experimental education research: rethinking why, how and when to use random assignment. Educational Research and Evaluation.

Final journal paper here / Early working paper here


Sims, S., Anders, J., & Zieger, L. (2022). The internal validity of the school-level comparative interrupted time series design: evidence from four new within-study comparisons. Journal of Research on Educational Effectiveness.

Journal paper here / Non-technical report here


Sims, S., Ander, J., Inglis, M., & Lortie-Forgues, H. (2022). Quantifying ‘promising trials bias’ in randomized controlled trials in education. Journal of Research on Educational Effectiveness.

Journal paper here / Working paper here / Thread here / Academic responses from John Deke and Andrew Gelman


Sims, S. (2020). Informing Better Trial Design: A Technical Comment on Lortie-Forgues and Inglis. Educational Researcher.

Journal paper here / Response from the original authors here