Last week the National Institute of Economic and Social Research, a British think tank, released a startling chart comparing the current slump with past recessions and recoveries. It turns out that by one important measure — changes in real G.D.P. since the recession began — Britain is doing worse this time than it did during the Great Depression. Four years into the Depression, British G.D.P. had regained its previous peak; four years after the Great Recession began, Britain is nowhere close to regaining its lost ground.

Nor is Britain unique. Italy is also doing worse than it did in the 1930s — and with Spain clearly headed for a double-dip recession, that makes three of Europe’s big five economies members of the worse-than club. Yes, there are some caveats and complications. But this nonetheless represents a stunning failure of policy.

And it’s a failure, in particular, of the austerity doctrine that has dominated elite policy discussion both in Europe and, to a large extent, in the United States for the past two years.

O.K., about those caveats: On one side, British unemployment was much higher in the 1930s than it is now, because the British economy was depressed — mainly thanks to an ill-advised return to the gold standard — even before the Depression struck. On the other side, Britain had a notably mild Depression compared with the United States.