914 Iranians constituting an extremely representative sample were interviewed in order to determine the potential of Iranian society to foster a liberal democracy. An innovative method was created to match the conditions of autocratic countries. A non-political questionnaire was used and a new index was formulated which measures liberal tendencies based on values, rather than on explicit political opinions. The index was validated using data obtained from 160,973 participants in 62 countries, and Iran was compared to those countries.
For further reading please see the Full Report, pages 23-33