Hadjdoudou , Meryem, and Yamna Ismaili. 2022. “Impaired Concentration of Attention Among to Pupils of the Second Stage of Primary School- (fourth and Fifth Years of Primary Stage)”. Al-Jamie Journal In Psychological Studies and Educational Sciences 7 (2):1039-55. https://journals.univ-msila.dz/index.php/ajpe/article/view/8825.