Uwiragiye M, Sibomana V. 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. AJERNET [Internet]. 2026 Oct. 11 [cited 2026 Oct. 14];7(4):304-16. Available from: https://ajernet.net/ojs/index.php/ajernet/article/view/2126