An Investigation of Brain Drain from Iran to OECD Countries Based on Gravity Model

Brain drain as a migration of skilled and educated labor is an important issue from years ago and this is one of the critical matters with which the developing countries like iran are engaged. so because of the importance of this subject in this study we have concentrated on investigating on causes of brain drain from iran to 16 oecd countries since 1991 to 2004 based on gravity model. this research shows that the gravity mode is able to justify the causes of brain drain as a set of pull and push factors like population, geographical distance, real per capita income, unemployment, degree of economics openness', participation of private sector