The US recession lasted 18 months and was the most prolonged since World War II, a report has concluded.
The National Bureau of Economic Research said the recovery began in June 2009, with recession having begun in 2007.
Its views carry weight in the US, even though there is usually a lag before it reaches a view, said BBC World Service economics editor Andrew Walker.
The organisation’s figures take in data beyond simply GDP.
Income, employment industrial production and wholesale retail sales also from part of the analysis.
Click here to view photos: