UWIRAGIYE, Marcelline; SIBOMANA, Vincent. Effect of cognitive development on second-language acquisition and academic performance among secondary school students in Rwanda: A case study of Groupe Scolaire Kivumu, Muhanga District. African Journal of Empirical Research, Nairobi, Kenya, v. 7, n. 4, p. 304–316, 2026. DOI: 10.51867/ajernet.7.4.26. Disponível em: https://ajernet.net/ojs/index.php/ajernet/article/view/2126. Acesso em: 13 oct. 2026.