| 1 (244) | Educational Testing Service | USA |  | |
| 2 (1057) | RAND Corp | USA | | |
| 3 (1104) | Institut Zur Zukunft der Arbeit | DEU | | |
| 4 (1164) | SRI International | USA | | |
| 5 (1517) | Institute for Systems and Computer Engineering, Technology and Science | PRT | | |
| 6 (1527) | Center for Health Technology and Services Research | PRT | | |
| 7 (1783) | United Nations International Children's Emergency Fund, United States | USA | |
