The strong motivation driving talented and smart people to escape from their own country could include the lack of social support، realizing their ambitions and job opportunities in their country. The results of a research project done by the Ministry of Science، Research and Technology of Iran shows that this “brain drain” is a consequence of the disruption caused by: diminished hope for the future; an increased sense of social، cultural and political insecurity; lack of attention by the government policies to the issue of competence and unemployment; continuous crises; sudden changes in laws and regulations; and also economic، cultural and scientific problems. Over the last 30 years، Iranian society has suffered a continuous brain drain which is PARTLY A reaction to political challenges; the ways of allocating funds to research projects; and the lack of optimal investment in research and development could be some of the examples of massive economic mismanagement of the government of Iran which has played a role in the brain drain.