ABDELLATIF, Mohamed Sayed Mohamed. The Effectiveness of a Training Program based on Some Positive Psychology Techniques in Decreasing Learned Helplessness and Developing Psychological Flow among Underachieving University Students. Journal of Educational and Psychological Sciences, New Mexico, United States, v. 5, n. 14, p. 186–154, 2021. DOI: 10.26389/AJSRP.S261120. Disponível em: https://www.ajsrp.ojsexpert.com/index.php/jeps/article/view/3539. Acesso em: 21 dec. 2025.