Lefebvre, Jean Paul, Jeanne Sinclair, Scott Davies, Hyunah Kim, Eric Duku, and Magdalena Janus. 2026. “Reciprocal Links Between Math Self-Concept and Achievement: Evidence From Population-Level Administrative Data”. International Journal of Population Data Science 11 (5). https://doi.org/10.23889/ijpds.v11i5.3689.