Ariyan J, Sanagouye Moharer G, Karbalai Harafteh FS. The Effectiveness of Group Problem-Solving Skills Training on Academic Achievement Motivation and Academic Self-Concept of Sixth-Grade Male Students in Iranshahr. ECS. 2022;5(3):78-85. Accessed July 18, 2025. https://journalecs.com/index.php/ecs/article/view/145