List of Articles Structural Validity Open Access Article Abstract Page Full-Text 1 - Indicators and Components Affecting the International Development of Table Tennis of Iran (Exploration and validation with mixed approach) مهران احدی محمد حامی وحید شجاعی Open Access Article Abstract Page Full-Text 2 - Validity and Internal Homogeneity of School Children’s Happiness Inventory among Elementary School Students in Khorramabad City Sadigheh Heydari John Ivens Mehrnaz Azad Yekta