Ariyan, J., Sanagouye Moharer, G., & Karbalai Harafteh, F. S. (2022). The Effectiveness of Group Problem-Solving Skills Training on Academic Achievement Motivation and Academic Self-Concept of Sixth-Grade Male Students in Iranshahr. International Journal of Education and Cognitive Sciences, 5(3), 78-85. https://journalecs.com/index.php/ecs/article/view/145