McGann and the Program published the annual Global Go To Think Tank Index.[10] As of 2010, the Index is based on a three-phase survey whose participants include politicians, scientists, think tank donors, and think tanks.[11] However, this method of the study and assessment of policy institutes has been criticized by researchers such as Enrique Mendizabal and Goran Buldioski, Director of the Think Tank Fund, assisted by the Open Society Institute.[12][13]