List of Articles Open Access Article Abstract Page Full-Text 1 - Investigating the role of heredity and environmental factors in the development of cognitive and affective dimensions of theory of mind by comparing ordinary 4-6-year-old children, identical and non-identical twins and orphaned children Maryam Sedighi Majid Barzegar Maryam Kouroshnia Ghasem naziri 10.30495/jpmm.2024.32182.3819