Introduction: The current research was conducted to evaluate the dimensions of developmental family function in predicting the executive functions of deaf children. Method: The research method is descriptive-correlational. For this purpose, 60 people were selected among the deaf students with mean age of 10 years and three months at Mashhad using cluster sampling method. Data collection tool was Developmental Family Function Assessment Questionnaire (DFFAQ) and Kulij Psychological Neurology Questionnaire (Alizadeh and Zahedi, 2005). To analyze the data, Pearson correlation and stepwise regression were used. Findings revealed a significant positive correlation between developmental family function and executive functions of deaf students (p <0.01, r = 0.44), positive significant correlation between developmental family function and organizing (p <0.05, r = -0.31) and positive significant correlation between developmental family function and decision-making-planning (p <0.01, r = 0.31), and positive correlation between developmental family function and inhibition (p <0.01, r = 0.27). Findings of multiple regression analysis suggest that components of developmental family function can predict executive functions components of deaf students (p<0.01). In total, findings of this research revealed that developmental family function (attention and regulation, intimacy, etc.) is effective in predicting executive functions of deaf students.

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