From Knowledge@Wharton: The United Kingdom’s Prime Minister David Cameron plans to create a national well-being index. French Pres­i­dent Nicolas Sarkozy has formed a team that includes two Nobel Prize-winning econ­o­mists to come up with a system for measuring the nation’s well-being. In China, happi­ness indexes have become so popular that cities there compete for the title of China’s happiest city. Many now argue that purely economic measures of a country’s progress — such as gross national product (GDP) — fail to count many things people value highly, such as personal and commu­nity rela­tion­ships or a healthy envi­ron­ment. To learn more about measuring happi­ness, Knowledge@Wharton spoke with Nic Marks, author of the e-book, The Happi­ness Mani­festo: How Nations and People Can Nurture Well-Being. · Go to The happi­ness mani­festo: Can a country be as happy as a duck in water? →