Sajadinia , F.S. et al. 2026. Development and Validation of an Islamic Logotherapy Training Package and Determining Its Effectiveness on Religious Identity and Academic Self-Efficacy of Female First-Grade Secondary School Students. Journal of Adolescent and Youth Psychological Studies (JAYPS). 7, 6 (Jun. 2026), 1–10. DOI:https://doi.org/10.61838/.