Stallasch, Sophie E.Sophie E.StallaschLüdtke, OliverOliverLüdtkeArtelt, CordulaCordulaArtelt0000-0001-7790-2502Hedges, Larry V.Larry V.HedgesBrunner, MartinMartinBrunner2024-10-022024-10-0220241573-336Xhttps://fis.uni-bamberg.de/handle/uniba/98459engSingle- and Multilevel Perspectives on Covariate Selection in Randomized Intervention Studies on Student Achievementarticle10.1007/s10648-024-09898-7