The U-bend of life – Why, beyond middle age, people get happier as they get older
           ASK people how they feel about getting older, and they will probably reply in the same vein as Maurice Chevalier: “Old age isn’t so bad when you consider the alternative.” Stiffening joints, weakening muscles, fading eyesight and the clouding of memory, coupled with the modern world’s careless contempt for the old, seem a fearful prospect—better than death, perhaps, but not much. Yet mankind is wrong to dread ageing. Life is not a long slow decline from sunlit uplands towards the valley of death. It is, rather, a U-bend.
         When people start out on adult life, they are, on average, pretty cheerful. Things go downhill from youth to middle age until they reach a nadir commonly known as the mid-life crisis. So far, so familiar. The surprising part happens after that. Although as people move towards old age they lose things they treasure—vitality, mental sharpness and looks—they also gain what people spend their lives pursuing: happiness. 
       This curious finding has emerged from a new branch of economics that seeks a more satisfactory measure than money of human well-being. Conventional economics uses money as a proxy for utility—the dismal way in which the discipline talks about happiness. But some economists, unconvinced that there is a direct relationship between money and well-being, have decided to go to the nub of the matter and measure happiness itself.
       These ideas have penetrated the policy arena, starting in Bhutan, where the concept of Gross National Happiness shapes the planning process. All new policies have to have a GNH assessment, similar to the environmental-impact assessment common in other countries. In 2008 France’s president, Nicolas Sarkozy, asked two Nobel-prize-winning economists, Amartya Sen and Joseph Stiglitz, to come up with a broader measure of national contentedness than GDP. Then last month, in a touchy-feely gesture not typical of Britain, David Cameron announced that the British government would start collecting figures on well-being.  
[Read more: http://www.economist.com/node/17722567 ]
Keywords: Nadir (the lowest point [fundo do poço?]); GNHI (Gross National Happiness Index); cohort [A generational group as defined in demographics, statistics, or market research];