The Philippine Institute for Development Studies has been ranked 40th in a survey of the world`s think tanks done by the University of Pennsylvania. PIDS said in a statement it was ranked 40th and 79th on the list of the world`s best social policy think tanks, and best development think tanks, respectively. The 2012 Global Go To Think Tanks Report and Policy Advice of the University of Pennsylvania`s Think Tanks and Civil Societies Program ranked 6,603 policy institutes from 182 countries for the latest survey.