Sarkozy earlier announced in Paris that Stiglitz and a fellow Nobel economics laureate, Amartya Sen of India, will participate in the project.
The 64-year-old winner of the Nobel economics prize in 2001 and currently a professor at Columbia University in New York, is to chair the panel.
Stiglitz, known for his outspokenness and criticism of globalization, said the French president had given him "a broad-ranging mandate trying to put together a commission study on the broad questions of how do you measure well-being."
"Among the economics profession there has been a strong sense for a long while that gross domestic product is not a good measure. It doesn't measure changes in well-being, it doesn't measure comparisons of well-being across countries," he said.
Thus, if political leaders "are trying to maximize GDP and GDP is not a good measure, you are maximizing the wrong thing and it can be counterproductive," he said.
The former chief economist at the World Bank, who resigned in 1999 after accusing rich countries of not doing enough to help the poor, said he hoped the panel's findings would go beyond the French framework.
"Hopefully this will have global consequence," he said.
"It doesn't necessarily mean that there will be a replacement of current measures, but maybe a construction of complementary measures," he said.
He said there was some discussion about the possible participation of other countries in the project.
"Whether we will do it just under the auspices of the French government or whether there will be other partners is a question that is still open," he said.
For him, measuring growth is a global issue made even more urgent by the problems caused by global warming.
"The standard measures of GDP do not measure the degradation of the environment, the depreciation of natural resources."
And GDP growth can mask a sharp decline in individuals' quality of life, he argued.
"It's been particularly true in the US where GDP has been going up but actually most people not only feel worse off, their measure of income is actually going down," he said.
Stiglitz said he had agreed to take on the project only after the French government assured him the new panel "will have complete liberty" to define the problem and to analyze it.
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http://ca.news.yahoo.com/s/afp/080108/business/france_economy_growth_index_lifestyle_us
Note: http://ca.news.yahoo.co...

Of course, there's no such thing and the Nobel Prize for Economics, it is the Bank of Sweden Prize in Memory of Nobel, strongly opposed by the Nobel family.
Ed Deak.