A total of 24,090 citizens across 22 countries were interviewed face-to-face or by telephone between December 6, 2011 and February 17, 2012. Polling was conducted for BBC World Service by the international polling firm GlobeScan and its research partners in each country, together with the Program on International Policy Attitudes (PIPA) at the University of Maryland. Countries were rated by half samples in all countries polled. In five of the 22 countries, the sample was limited to major urban areas. The margin of error per country ranges from +/- 2.9 to 4.9 per cent, 19 times out of 20.