Noilakhon Nodir qizi Tolipova and Dilnoza Dadakhanovna Zuparova 2026. Does Implementation Speed Matter? A Difference-In-Differences Analysis of The Reggio Emilia Approach in Early Childhood Education. The American Journal of Social Science and Education Innovations. 8, 04 (Apr. 2026), 54–65. DOI:https://doi.org/10.37547/tajssei/Volume08Issue04-09.