Ershadi Chahardeh, Shima, Abutaleb Saadati Shamir, and Rozita Zabihi. “The Effectiveness of Cognitive Empowerment Based on the Lumosity Program on Maher Crystallized Intelligence of Elementary School Boys”. International Journal of Education and Cognitive Sciences 5, no. 5 (June 21, 2022): 149–157. Accessed July 18, 2025. https://journalecs.com/index.php/ecs/article/view/187.