TY - JOUR AU - Hosseinabad, Nahid AU - Najafi, Mahmoud AU - Rezaei, Ali Mohammad TI - The Effectiveness of the Positive Youth Development Education Program on the Positive Development Indicators among Adolescents JO - Journal of Developmental Psychology Iranian Psychologists VL - 17 IS - 65 SP - 15 EP - 25 PY - 2020 DO - ER -